Man, that is a ton of consoles. They won't have any problems reaching their target of 5 million by March. Hell, Sony might already be at that total already.
I wonder what they could have sold through if they were able to actually keep up to the customer demand like Microsoft. Maybe sell 2 to 1 instead of "just" 40% more? With the PS4 Asian launch still to come, that gap could just get larger in the short term.
Long term, Xbone and PS4 numbers already bode well for the future of console gaming!