First Week:
NA - 850K
Others - 600K
JP - 50K
Overall - 1.5M
LTD:
Dunno, hard to predict, but i'll go with 3.5-5M
Bet with Dr.A.Peter.Nintendo that Super Mario Galaxy 2 won't sell 15 million copies up to six months after it's release, the winner will get Avatar control for a week and signature control for a month.