Yah, I've thought about this, too. I'm kind of undecided for sales.
In theory I'd be tempted to say no, for example if Gears was released on PS3 and did 800K as a late port that's till 800K more.
However, clearly being exclusive can make a title more desirable on a certain platform, potentially boosting sales and 'desirability'. It also tends to put the title on something of a pedestal - a game only available to the subset who own that console. I mean, I have no trouble with the idea being exclusive makes a game high profile and potential a lead title for the platform.
But... would GT5 sell nothing on 360? Or Halo 3 nothing on PS3? Surely they would pick up a decent amount of additional sales.
It's tough to call.
So I'm going to sit on the fence and say... maybe.
Try to be reasonable... its easier than you think...
