That's a good concept. With studios like Bungie and Insomniac leaving the route of platform exclusivity, it's wise for Sony to start making deals with developers at an early stage, before Microsoft starts doing the same thing similar to their 'timed exclusivity deals' (which, I read, is one of the primary causes why people buy the CoD games for 360 rather than Ps3.)
If Sony does this with some multiplat games, and markets it like the Xbox (the trailers for the DLC in CoD always emphasize the fact that it's coming out for 360 first], then those same people with those mindsets will buy that corresponding multiplat game for the Ps3.
"Being single is easier on the gaming life, and the wallet."








