I like Brawl more. You have more control of what you are doing in my opinion. There are so many things to do in the SSB games. So many items to use, so many challenges to face, such great replay value even after you complete the main part of the game. After you are done with the all the cups in mario kart, the only thing left is Versus. I really like Mario Kart, but SSB is way better. All the best nintendo character are there (well most of them)!