No game will ever sell better as an exclusive then as a exclusive with equal marketing a developement budget.
The only reason Nintendo, Sony or Microsoft exclusive games post sales comparable to multiplat titles is because Nintendo, Sony and Microsoft are very, very good at promoting their products and they can afford to do so, what with a good portion of their marketing budget being recouped from console sales and bigger game profit margins.
Anyone who suggests exclusives sell more due to just being exclusive is simply short-sighted and can't see sales beyond what fanboys post on gaming forums like this one.







