GameCube vs Xbox, who had better games?

[TheWPCTraveler]

I'll say GameCube, since it was my first console, and it still has the best Mario Kart mankind has created, as well as multiple creative spins on franchises that were getting 'stale.'

I can't deny the fact that XBOX had gaming-defining games, though. If they didn't exist, XBOX wouldn't exist by now, or at least be a niche.

Edit: Why do I see four Mario Party games for the GameCube? Mario Party 4-7? Now, that is filler, even if I praise Nintendo for it.