One title that stands to gain, says Sebastian, is “Call of Duty 4,” a shooter from Activision,that might temporarily quell the “GTA” fan’s need to blow things away.

WTF. It'll sell great - on the Xbox 360. But how is that comparable to GTA...
I doubt the delay has anything to do with the PS3. But it really benefits Sony more because by April there will be more PS3s out there. Maybe MS should just hold the big time price cut until April.