50.GB is barely used, and most PS3 games fits a Dual Layer DVD. Since most PS3 fits DVD, i dont see any reason to use 100.GB discs.
IF Square could release a game on 100.GB, they would brag the hell about it.. "We made the best game ever, and it uses 100.GB out of 101.GB. Size does matter... Metacritics average score of the game. 50/100...Crap story, Dull game with 20 hours of non-skippable cut scenes.