That may well be the case. But just because the contract says Activision initially intended the game to be a XBOX exclusive doesn't mean that they ever approached Microsoft with a deal. Its very possible that once they realized the game wouldn't launch until the current console generation they changed their minds and decided to offer exclusive content to Sony instead. We know at dome point the plan did change, and it's hard to believe it was because Microsoft turned exclusive content down. Anyway, we cant know for sure and you may be right, but I find it hard to believe that Microsoft would pass up exclusive content on what was expected to be this gen's biggest new franchise. Especially since Microsoft has a pretty ruthless reputation when it comes to securing exclusive content.