The minimal PS3/360 gap will be 3.5M and maximal 5.5M by the end of 2009

[NeoMatrix]

So the gap will fall below 5.5 mln. next week. And will keep falling.
Just to think it was 8 mln. some time ago(before price cut/slim) and will be 5 mln. in just several weeks.
Impressive.

PS3 launched at 600$. And still was able to outsell x360 in same time frame.