The Wii will at least double the 360 sales for Christmas. Second place should be close.
You think the WII will be double I disagree I think the 360 can make a showing I am predicting 3-2 WII, PS3 should easily be third unless a price cut comes
PS3, WII and 360 all great systems depends on what type of console player you are.
Currently playing Call of Duty Modern Warfare 2, Fallout 3, Halo ODST and Dragon Age Origins is next game