It is indisputable that fewer resources are put into each version when a game is multiplatform; in this case, every hour that is spent getting the game running secondarily on 360 is an hour that could have been spent on the PS3 version. Granted, not *every* such hour will necessarily be used by the developer, because of the cost-benefit analysis of selling the game to a smaller (one-console) install base, but nonetheless simultaneous multiplat versions each get the shaft vs what they could have been as exclusives.
FFXIII will not be what it could have been as an exclusive. The respective hardware limits of each console will limit this game, where it could have been completely optimized for one console. Rockstar said the lack of a mandatory hard drive in 360 limited the game that GTAIV turned out to be. I wonder if hdd's or disc media will limit FFXIII more. Or processor...because this just occurs to me: SE said a while back that they were only utilizing 4 of the Cell's SPUs in FFXIII. Makes for easier multiplat transition, as it turns out...
