Welcome to the Wario Forums!! I like WarioWare a lot too!! WarioWare is very funny and fun, I like it for those reasons!! I hope you enjoy these forums!!
Mmm... it is a skin only. It doesn't has many differences.
EDIT:
It would be cool if Wario would be the third player in that videogame with Toad like fourth player, like characters would not have difference but it could be more cool because you...