So wait.
Dead Space sells 1.5 million+ and it's a failure, but MadWorld, The Conduit, Zack and Wiki, No More Heroes and Muramasa sell less than that combined... and they're all individual successes?
I think I'm gonna go ahead and develop a Wii game myself. Apparently they only cost a bag of peanuts to make and turn a profit no matter how badly they sell.