What should Microsoft do?

[ToastyJaguar]

Those games are good.


But back to the question again.

I don't think Microsoft needs to do much else except ensure that there games hit the deadlines because the above games for the PS3 are no 360 killers.
I also think Ninja Gaiden 2 will be a huge hit from the gameplay videos and screenshots. It won't be as big as MGS4 but it's going to be a solid title which should even gain some ground in it's native Japan where the PS3 is also struggling of late.