Well there are plenty of good games on Wii and DS that are selling very little.. yet basically all Nintendo first party games sell like hotcakes..
Wii owners buy everything with Wii and Mario in the title.. sure quality plays a role (well in the Mario games atleast) but the name is most of it..
Currently playing: MAG, Heavy Rain, Infamous
Getting Plat trophies for: Heavy Rain, Infamous, RE5, Burnout and GOW collection once I get it.