According to VGChartz, Wii sold 19.1, X360 sold 14.3, and the PS3 sold 14.4 worldwide in 2010. Adjustments could come in and change the numbers.
My 2011 prediction:
Wii: 17.5m (Besides Zelda, I'm not sure what other games Nintendo are going to release for the Wii in 2011,but, if they bring the Xenoblade, The Last Story, and the other Japanese games here to Americas and EMEAA then they can sell more Wiis.)
X360: 15m (I want to say 18m,but, I'm not sure about Kinect's momentum and I noticed that they were 3rd place in EMEAA in November & December.)
PS3: 16m (Software looks good and I think they'll support the PS Move in 2011.)
2011 should be close, unless price cuts happen then that will change things. I hope at E3 2011 we'll see some awesome stuff.
