fabinou said:
Considering that Mario galaxy sold 260k first week with an install base of 3,7 millions of Wiis, I would say that SM3D will sold not more than 150k first week.
With a boost of 30 or 40k for the console

Install base sometimes dont matter, GCN had a small userbase but launched SM Sunshine with over 320k! (Wii>>>GCN)