MS is doomed cause Sony is for the SECOND time this gen on a roll.
Jeez....there's still a 5 million gap and like before MS will come out swinging to put a halt to the sales increase.
MS is putting nearly all their eggs in the Natal basket and if that fails then we could say yes 360 is going to start falling behind fast unless we see more AAA exclusives.
Once Sony have GT5, GOW3 and FF Versus out the way then MS can rest a bit easier as those games sell machines.
Personally I think MS should make a big deal out of most multiplatform games looking better on their console.