I have like 15-20 level 100 Pokémon but never battled on Wi-fi. I do on Pokémon Online, though.
@Endeavor I would never restart my White. I caught 600+ Pokémon, have 4 shinies and played 200 hours on it. Add my 15-20 level 100s and you have a good waste of my life.
I've only trained one to level 100.