Well, honestly.
X360 average predictions are around 24M, it is going to end at 26-27M most probably.
Ps3 average predictions are around 20, and it is likely that it will sell 21-22M
Wii average predictions are at 40-41M, and it is likely to sell 44-45M.
I wouldn't say that the X360 is more biased than the others.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS