Sony and MS seem to be focusing on third party titles that best represent what their console already has to offer. MS is going after MW2, to shore up the impression that the 360 is the king of shooters, fending off Sony in NA and to a lesser extent EU, while Sony is going with the third person action/adventure title, playing off the vibe they have going with Uncharted, and even hearkening back to MGS4, given the parallels between a guy like Altair and Snake. Two similar guys from two different eras.
You can also look at it from a network standpoint. Microsoft's going after the big online games while Sony focuses on the big singleplayer experiences (granted Uncharted 2 has one hell of a multiplayer mode, but the focal point of the series will always be the singleplayer).
Given Sony's onslaught with the price cut and Slim, MS is obviously backing off the attack and trying to secure the base they already have, while the guys at Sony finally have the chance to build a decent image of their own to stand on.







