Mario has been going through tough times lately. After fighting those sad battles at least now he can take a breather and fight Tabuu. Tabuu is not one of the tougher fighters out there. Because of that he loses his first fight. Mario wins.

Update! In retrospect, Tabuu is actually very powerful and he did take down the Super Smash organization in their first fight. I don’t think Mario could last against his powerful energy canons and energy blades. Mario has a lot of abilities of his own, but they just won’t be enough. Tabuu wins.