This is what happens when you release a next-gen platform with PS360 level hardware.
I'm not surprised that you believe that.
Really? Because it seems the PS3/360 have no problems with Frostbite. Then you have a console which is more powerful and apparently the engine cannot run well. Strange that cryengine appears to run very well on it, even a quick rush job on Unreal 3 ran okay. Oh and criterion's engine runs very very nice. So obviously somethings not quite right.