[QUOTE=Grim; They say that game production is so expensive now, that's why it's exclusivity is in discussion.[/QUOTE]
The main reason that Sony lost exclusivity to such titles as GTA and Devil May Cry. They make so much more money if they distribute the game to a wider user-base. The company has to pay all the people behind the game (which if we're talking a blockbuster like FF 13, is quite bit), and at the same time generate enough revenue to have a profit. I'm sorry fanboys, but porting it to the 360 isn't shooting you through the heart, it's giving them better ability to deliver a better game, for they know they have the monetary backing of PS3 AND 360 players, so they can spend a little more to make it that much better. (I'm sorry if most of this was rambling, I'm kinda sick right now, but I hope I got the point across.)