Xbox 360 without a doubt. I know my country and it belongs to the Wii first with the 360 as a mistress, while the PS3 is the hot co-worker.
Honestly, too many factors to take into account such as the Move vs. Kinect sales in the US. Judging by the marketing dollars being spent in the US, I have a hunch the Kinect will sell double the 360s in comparison to the PS3s being sold by Move.
Sony for some reason has a resigned attitude towards the US, while it spends all it's marketing dollars in Japan, Europe and emerging 2nd world markets.







