he has the sports games, all his moves could be references to several mario sports gamesWario had actual source material to base a moveset off of. Waluigi is a reflection of an inversion with no actual source material. He's as detached from a real character as you can get.
mario kart
mario golf
mario sports mix
mario tennis
marrios hops 3 on 3
mario olimpic games
etc
he can have a very diverse moveset all based on sports games.