Guys, Don't worry about that.

It's not only Fighting-type

RT@Joshawott Will Pokkén Tournament's cast be limited to Fighting-type Pokémon or — Katsuhiro Harada (@Harada_TEKKEN) August 27, 2014

Game Director and Chief Producer of a number of acclaimed fighting games, Katsuhiro Harada, has confirmed via Twitter that Pokken Tournament won’t be limited to Fighting Type Pokemon. Harada wouldn’t reveal any more than that, but hopefully we will get more details about the arcade based title in the near future.