i think Kinect will surprass Xbox and Gamecube this year, shipments-wise...
Xbox sold 24M and Gamecube around 22M if im correct so Kinect stands at 19M according to Microsoft. So, with holiday season approaching and probably a price cut in the works, it is possible that Kinect will sell another 8M this holidays and surprass Xbox and Gamecube.
http://twitter.com/eurogamer/statuses/207796001082318848























