I wasn't necessarily surprised by the fact that the 360 outsold the PS3 in NA, I was more surprised that it outsold it by such a margin. It has to be shortages because I don't think the PS3 would fall in sales from the previous week considering how close to christmas we were. This could very well be the reason why PS3 didn't hit 1 million this week but that depends on if there actually was shortages and not just less demand, which is a possibility.
Oh well, here's to the new year for PS3 & 360, should be a good sales battle this year in NA.