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I don't know about BW2 since I haven't played it, but in BW, there were no pokemon with other EVs in the spots.
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You still need to know in advance that they do that. If you're not using a guide, you'll never know that. I personally don't like using guides, because I feel like I'm cheating.
But with the other game I used as an example (sorry, I know this is sounding like one of those cleaning commercials where I'm comparing two brands; I still think Pokemon is a great game), I never needed a guide. You can always see your Aptitudes/EVs, so anything you do that changes them, you always know exactly what's increasing. Not to mention, in Pokemon you have to walk back and forth to get into a random battle. With the other game, one command, and you're exactly where you need to be.
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Looks like there's two more problems with Pokémon: 1) You have to know what you're doing before you do it, and 2) You have to move your character around the screen in order to accomplish the game's main activity.
I've refrained from being too critical of alternate points of view, but we're at the point where the clock is just counting down to, "The problem with Pokémon is that there are all these weird magical creatures everywhere you go." e_e