PS360ForTheWin on 12 April 2008
I think mario kart will probably sell better, its a full game and is on a console which has sold 23.5m to the PS3's 11.6m, so based on thoose 2 facts mario kart will outsell GT5:P, i think a better question would be Gran Turismo 5 (full game) v Mario Kart, assuming console sales and installed bases remain as is (i.e week on week sales between now and GT5's release), it could be close.
