nothing stopping them, but what else to compare GT5 with?
they are both exclusives, but racing sims just because on is on xbox and ps3 doesnt mean console/game attacks
sure make a K3 vs Halo reach thread, they are the same type of titles they are what you would compare each other with. Halo would be much bigger since say xbox and they will response Halo
Of Course That's Just My Opinion, I Could Be Wrong