It's Emboar not Pignite
And I think every voice fits well for the Pokemon, I mean they all sound very intimidating, and considering these are monsters you use to fight with, that's definately a good thing.
Not the Emboar from the trailer, it sounded great, as did all the Pokemon! I was talking about a Pignite from the actual anime series. (I think Bianca used it against Ash in a battle in one episode.) That's the one I felt was a little off. But all of the trailer Pokemon were awesome!