New Super Mario Bros. Wii vs. Super Mario Galaxy 2 sales predictions

[Green Penguin]

So you think that N.S.M.B.W can sell 37 Million? It will sell a lot but not that much!

S.M.G will sell 10 Million lifetime(Prediction)
S.M.G.2 will sell 8.5 Million lifetime(Prediction)

Together is 18.5 Million X2 is 37 Million