That is Black Friday in the state. I would think they would want to launch at least a week or two before, and then cash in on another peak of sales on Black Friday.
If those are the actual dates, and PS4 is in December. Then yes, another advantage Microsoft. But I think the PS4 will start well in the states, but then get slaughtered within a year or so.
I just don't see it having any legs other than the true hard core fans.