Sony is definitely past 3M, now. Probably closing in on 3.5M. Not only did they get more shipments to the US, but they also had launches in more regions in the last few weeks. One insider suggested that they shipped ~500K for the Asia launch.
MS, on the other hand, is probably just over 2M. They aren't seeing much demand in some regions in EU. I'm guessing final sales for the year is going to be ~3.5M PS4s vs ~2.5M Ones.







