Numbers for pre-orders are not yet at 100k in the U.S, and those numbers are totally unknown for Europe (and usually buys less units of Metroid series), so expect 150k for the first week (U.S and Europe sales combined) and 450k lifetime. Just look the actual sales for Metroid 3 Corruption on the wii. It's a great game that is not taking great numbers for the pasts months. I would say that the total sales for the third part are now at 1.5 million 8quite good), so, you really expect such a great boost in sales? Why? Only because of the new controls? Obviously three games for the price of just one it's a good temptation, but for great graphics, and great controls there is MP 3 Corruption, and nobody is buying it (and less before the announcement of MP Trilogy).
I really would like MPTrilogy could sell a lot, but i don't think so.
Instead of sales, MP is one of the best franchises in videogame history!!