There are a lot of niche games on the PS360 that sold a lot. Look at UFC that got a HUGE opening week. Other completely new IP on the PS360 that sold a lot. Dead Space and Left 4 Dead.
Hardcore gamers build hype for these games and then spread the word. Wii gamers should do that and more gamers should know about MadWorld. I do not think that all of the 2.5-3 million of Wii owners should buy it but if most of them know about the game, most of those most will buy it thus resulting in higher sales.







