"According to IGN."
I'll believe it when I see it, not because some source rumors so.
I'm sure the 360 will have a strong year, MS aren't going to lie on their backs while the other consoles release some stellar software.
I know Kingdoms is being mentioned as a 2011 release, but we don't even have a trailer for it yet?
So I think it's either:
-Being rushed to meet a deadline
-Actually a lot further along in development than we think
-Going to be delayed to 2012.
I'd say the second two are the most likely. As for Alan Wake 2 releasing in 2011, not a hope.
We always have speculative threads like this each year for the 360, and each year there are always a few surprises. A big exclusive could literally come from any third party down the line for the 360.
