predict the sales of the wii, ps3 and x360 this year.

[brute]

I'd go with.
Wii- 25 million (very strong line up, plus NSMBW will keep monumentum going through Q1)
PS3- 14 million (Again strong line-up should help it in sales)
360- 13-16million (Natal, if it's a big hit could be as high as 16 milion)