Rotom can also have trick, basically screwing over your Rotom-W counter by giving it a completely useless choice scarf. It can also smack gastro for major damage with hp grass, so yeah, gastro isn't even that good in that role.
That wasn't a 2HKO in gen 5, I don't think it'll 2HKO in gen 4. Not like they ever carry that move...
But yeah, I guess for the most part, you're correct.
So just something I am curious with. For any pokemon that has a Jack of All stats (balanced) (eg: Togekiss, Flygon, the 100 based fairies, Houndoom, etc), how would they fare in the Bulky Offensive metagame of today? Are they having a good advantage this time compared to last generation's weather wars?
For me, those pokemon could become as popular as bulky offense simply because of their multiple roles (ex: Celebi and Jirachi last gen). They are not offensively pro like hyper offense. They are not that slow and/or durable like bulky offense. Yet they are not so bulky like stall.
Togekiss has better typing now, defog buff, and it's infamous paraflinch combo.
Flygon is by no means a good offensive pokemon and it's bulk is...not overwhelming. It's best niche is as a defogger, thanks to it's resistance to hazards, decent speed, and U-turn. It can be used.
Houndoom I don't have high hopes for. It can make a fair sweeper with it's speed boost from mega evolution and Nasty Plot, however.
I'm curious about Jirachi thanks to it's two new weakness, but I predict it'll still be usable, Celebi can help Volt Turn, and Manaphy is still deadly with Tail Glow.
Shaymin struggles with competition with Mega Venusuar, but I'll give it credit for better recovery. Mew is very flexible, but it's defensive typing is not astounding and it struggles to set itself apart at any job it can preform. Saddly, Victini's typing does not scream "bulky offense" at all, and while V-Create is very powerful, it is just begging to be revenge killed.