It can't handle ffxiii, but is still very capable
		
		
	 
and the other comment about uncharted isn''t able to run on the xbox360. which is not completely right.
Both games are clearly capable of running on a xbox360. the reason only why its not there or lacking like the ps3 version = because developers that do push hardware will have massive issue's with both consoles.
The PS3 is a strong device on cpu level + alocating gpu tasks towards cpu department. If you want to port this you either have to entirely rebuild the game for the xbox360 or just to downgrade it towards levels that it becomes acceptable for the company.
The same thing basically happens with the xbox360>ps3. if a game is builded for the xbox360 like alan wake and ported towards the ps3, a company needs to massively downgrade the graphical quality in order to make it run on the gpu of the ps3. or either program the entire thing again.
This is what crysis 2 for example did. Program it from the bone on the ps3 and xbox360. but it costs a lot to do this. Final fantasy clearly didn''t had the budget for it and did go cheap on the port solution through going almost bankrupt by the game.
The architectures are massively different from the xbox360 and ps3. thats why i stated earlier that both consoles have problems with eachother games unless they are optimized for it.
the ps3 can for example jump towards larger open world games on a lesser graphical solution really really good. But the xbox360 prevents this from happening as the xbox360 was build around a 50/50 cpu/gpu. and not a 75/25 cpu/gpu solutoin as the ps3. The extra gpu power is easily allocated towards higher quality graphical games without much of a efford. but other things get sacrificed.
As people want more and more realistic games, the ps3 gets basically murdered by a crappy gpu which limits the cell massively. as the cell gets massively cannibalized through supporting the gpu with tasks in order to get the same appearence as the xbox360 version.
PS3 was build around having massive worlds on clean + a big more graphical solution quality ps2 games. Not for high graphical 2/3 characters upfront and small area's. where the xbox360 shines on and the gaming has jumped towards it in order to keep remotely in track with PC's through being able to dump a hell lot of polygons in order to give the same appearance while simple pulling this filtering out on PC department.
The PS3 would indeed be stronger through its cell, if the cell could do where it was builded for entirely, and not limited by a gpu that eats its resources up massively in order to get the same solution.
therefor neither console is stronger then the other, while they do have both advantages over eachother. the xbox360 has clearly the gpu department which is beyond stronger as dedicated hardware, and the ps3 has the cpu department.
thats why you see downgraded mmo's ( or atleast planned ) on the ps3 earlier and running mostly better then the xbox360.