What kind of holiday boost would do that?
Look at last year:
VGChartz Hardware data for the period 06th Oct 2007 to 29th Dec 2007:
If the Wii wasn't supply limited it could have sold 9 to 10 Million units. If you get a similar performance (with the Wii having adequate supply) then the Wii could outsell the PS3 and XBox 360 combined by 2 to 3 Million; if it is remarkably lucky and sells like the Nintendo DS did last year it could outsell the PS3 and XBox 360 by 5+ Million.