MW2 or NSMB Wii? Which will sell more end of 09 and lifetime?

[TWRoO]

Munkeh111 said:
MW 2 for both. I don't think NSMBs Wii will sell 15m, which MW2 will. I also don't think people should be allowed to makes where they just stick "New" on the front...

As opposed to sticking "2" on the end?