ummm I should get a better performance than PS3 at any rate right ?
Portable XIII not happening.
You see, PC's aren't always god machines. The PS3 version was coded SPECIFICALLY for the PS3 GPU. Where the devs know the ups and downs of the card and can code the game with that in mind. PC's have the problem of being able to use 1000000000000 different GPUs. Games aren't coded with one card in mind on PC, it's a pretty generic code to run on all cards. The most realistic option you have is upgrading your laptop. Mine runs it at 60fps no problem.