for the most part he is. although I say they've been acting more like rivals recently, rather than true enemies. the animosity they felt has mellowed out quite a bit. now they're more than willing to work together if the situation demands it. hell let's not forget the sports games, Mario Kart games, and others.
OK...I thought about for a while and I have to say I'm honestly not sure. On one hand, I could see that possibly happening, but on the other hand, he doesn't seem like an ideal choice. Not a bad thought though.