i would say SSBB because more people have a wii, SSBB is really popular and wii fans are dieing for this game!!!!

right now halo 3 has sold 7.38 million copies.....DATS ALOT!!! but look how long it's been out for

SSBB has sold 1.45 million only in japan .....dats LOT!!!! im getting a copy when it comes out in europe

hope it's selling like hotcakes in america