Agreed, but what else is Pidgeot going to do that another bird can't do better, especially in Multi? Fearow, Dodrio, Swellow, Staraptor, and a few other Normal/Flying Types have it horribly outclassed. I just mentioned an option that it could do - one used mostly to screw with the opponent's patience (mind games and such).
Considering its largely middle-of-the-road stats in everything (much of Generation 1 was like this though), it's best used in these environments as a disruptive support Pokémon. I would bet that Pidgeot's generally low stats was originally because Pidgey was a Pokémon you could get at the beginning of the game, and they purposely kept it relatively weak to limit yourself early on. (Didn't explain why the starters were a lot more powerful though.) In any case...
Double Battles
Unlike something like Staraptor or Braviary, Pidgeot is not meant to be in the front lines dealing damage to your opponent. Well, not under normal circumstances anyway. In a double battle, a good Pidgeot supports its partner while hindering the opponent.
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Tailwind doubles the Speed of Pidgeot and anyone else on your team for the next 2 to 3 turns, not including the turn it was used. This would be the main reason Pidgeot would be on your team--it was Pidgeot's signature move, and while other Pokémon now know the move, they all have stats better suited for direct attacking than Pidgeot. If you build your team around Tailwind, or maybe just another Pokémon, you'll be given the edge in a battling format where going first is a huge advantage. (Theoretically, Slowbro can outrun Infernape under Tailwind, though only with a Speed-enhancing Nature and full IVs and EVs in Speed.)
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Featherdance can effectively neutralize a physical attacker. Pidgeot has a base Speed of 91, which is just barely above threats like Lucario or Excadrill. If Pidgeot is partnered with a Pokémon with low Defense, or you're just up against a troublesome physical attacker, Featherdance will slow them down enough to get the edge. If the physical attacker is faster than Pidgeot, then you should have Protect on Pidgeot's partner as your opponent will likely go after the partner instead. Featherdance will hit both of the opponent's Pokémon (unless one of them has Protect or something), so if they're reliant on physical attacking, you can tear through them with even one Featherdance.
• As a lot of double battling teams have Reflect and Light Screen up,
Defog would be good on Pidgeot--just target either of the opponent's Pokémon, and all of their barriers will go away. If, on the rare case someone tries a Spikes-type move on you (Spikes, Toxic Spikes, or Stealth Rock), target your partner to rid your team of them.
• And, of course, Pidgeot can learn
Rain Dance, in case your Drizzle Pokémon has been knocked out. Or you don't want to use Drizzle.
Since Taunt is also pretty common in double-battling, Pidgeot should have at least one attacking move to keep itself relevant. You don't want to be forced into switching, since your opponent will likely concentrate both of his or her attackers on the Pokémon you'll switch out, and it's likely that Pokémon will faint before it can do anything. Pidgeot's not particularly strong offensively, but you should have something like
Brave Bird to finish off a weakened Pokémon or
Heat Wave as a general spread attack that Steel-types dislike.
As Pidgeot will only attack as a last resort, your EVs should reflect that. You don't need points in Attack or Special Attack, but rather, concentrate them on Defense, Special Defense, and Speed. If you're using Featherdance, focus on Speed and distribute the rest among the defenses. If you're using Tailwind, place a moderate amount on Speed, enough to outrun base 130 Pokémon like Crobat. If you're using both Tailwind and Featherdance, allocate them somewhere in between (but I'd recommed you use Tailwind in battle before you use Featherdance).
However, if you're going to have a regular Attack/Speed EV spread, you'll need a
Focus Sash to make sure Pidgeot can at least survive the turn needed to use Tailwind. Watch out for Fake Out users if this is the case. Otherwise, a
Flying Gem should give Pidgeot the little oomph needed to KO something, even without any points in Attack.
Triple Battles
In a triple battle, Pidgeot is still best used as a support Pokémon. However, because there is now the threat of triple-teaming, support alone won't cut it. Pidgeot will have to get its wings dirty with direct attacking and disruption.
You will generally want to place Pidgeot
to the side. Pidgeot can't take three attacks consecutively, even when EVed in the defenses. This is where a Pokémon whose primary purpose is support should go anyway, as they're supposed to stick around as long as possible, and they're not going to attack across the stage anyway.
• When you do need to attack, however,
Quick Attack is quite useful as Focus Sash is common in triple battling teams. (This is due to how super-effective attacks hit all the time.)
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Tailwind is even more useful in a triple battle than a double battle, as it means you'll benefit from doubled Speed for 6 to 9 moves instead of just 4 to 6 moves. This is perfect for ganging up on your opponent's central Pokémon (or side Pokémon, if you have moves that can strike from an opposite corner).
• However,
Featherdance must be used with great caution, as it will affect your allies as well in a triple battle. You should have a Pokémon who will not need their Attack stat (such as a special attacker) next to Pidgeot, or if Pidgeot is in the middle, on both sides, if you're going to use it.
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Defog is useful here too, as you'll also see a lot of Light Screen and Reflect being put up.
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Roost can give your opponent an unexpected curveball--usually, healing moves are not too useful in a triple battle, but if you feel Pidgeot will get targeted by a Rock or Electric attack, and Pidgeot has taken damage, use Roost to halve the damage taken from that attack for this next turn while your partners finish off that Pokémon.
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Sky Attack with a
Power Herb may be more useful than Brave Bird, since in a triple battle, you want to get the damage going as quickly as possible and as much as possible.
While Pidgeot could get triple-teamed, as long as you keep it on the sides, it'll be exceedingly uncommon for it to take three attacks in one turn. Usually, your opponent will deem Pidgeot as low-priority and will not attack it with all of his or her forces, so you'll often find Pidgeot surviving turns unscathed. A super-effective attack, on the other hand, will usually go straight to Pidgeot, so you should have either a
Yache Berry, a
Wacan Berry, or a
Charti Berry, depending on which type of attack you expect to see most often. You can also equip a
Focus Sash, since Pidgeot will most often only get attacked once per turn, if that.
Because Pidgeot sits on the sides and assists its partners, you should go for a defensive EV spread. In a triple battle, your opponent is likely to have both physical and special attackers at once, so you should be prepared to take them both on simultaneously. Pidgeot's Special Defense is slightly lower than its physical Defense, and Featherdance can cover physical threats, so you should put more points in Special Defense.
Rotation Battles
Rotation Battles don't have as much room for support Pokémon, so if you're going to use Pidgeot, you need to know what your opponent has and have a good idea of what your opponent will do. Here, Pidgeot is best used as a hybrid attacker and supporter.
• Again,
Featherdance will be great on Pidgeot. Switching out almost never happens in a Rotation Battle, but if you can drop an opposing Pokémon's Attack and remember which one(s) you've done Featherdance to, you can safely rotate in to a Pokémon who would normally be a bad matchup against it. Featherdance is at its most useful here, if you ask me, because you can wither the opponent's Pokémon down enough to ravage the ones out, which will give you a huge early advantage.
• Even without the Spikes family,
Whirlwind is good in a Rotation Battle as it forces one Pokémon out for another. Your opponent is going to pick three Pokémon who go well with each other. The moment you switch one out with another, the type balance will be disrupted for your opponent, giving them holes in their defense you can pick on.
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Roost will heal Pidgeot and remove its Flying-type. In a Rotation Battle, this effect applies until you rotate Pidgeot back out again, meaning you can treat Pidgeot as if it were a pure Normal-type and thus reduce weaknesses in your trio.
• Pokémon with type immunities are common in Rotation Battles. Use
Foresight to remove them from Ghost-types you may encounter if you have anoher Pokémon out who specializes in Fighting-types.
• As for attacking, moves like
Brave Bird and
Hurricane can deal unexpected big damage while
Return is more of an all-purpose low-risk, low-reward move. Be sure to have at least one on Pidgeot--not because of Taunt, but because your opponent will try to make Pidgeot your last Pokémon out, and you don't want to be stuck unable to attack if that is ever the situation.
Essentially, Pidgeot, in Rotation Battles, is about creating weaknesses in your opponent's Pokémon in play while reducing weaknesses in yours. Be sure to switch to Pokémon it has a type advantage against, though this is easier said than done.
In all of these battling environments, defense-lowering stats will sometimes pop up (they are rare but not nonexistent unlike in single battles), so you will have some use for
Big Pecks. Occasionally, perhaps more often, you will also come across Pokémon who will try to inflict Confusion--this is not normally used in VGCs but will sometimes pop up in more casual play, particularly from Crobat or Gengar (and sometimes Starmie). I would thus recommend
Tangled Feet when battling outside of VGCs, as that evasion boost may be enough for you to mess your opponent up that bit more to get them over the edge. These abilities are why you would pick Pidgeot over, say, Unfezant or Mandibuzz, both of whom know most (but not all) of the above moves. Unfezant also has stats closer to a sweeper and Mandibuzz's closer to a wall. Pidgeot's middle-of-the-road stats make it excel at nothing in particular, so it has to make the opponent weaker for its partner.