Despite all the X1 Improvements, geographical bias will be its biggest problem.

[Osc89]

The bias actually seems to be in NA. This week, the PS3 and 3DS outsold the 360 in Europe, Japan and in the rest of the world. However, in NA the 360 outsold them both and makes up more than half the sales. No other console had more than half the sales come from one region (except the DS in NA).