Oh my. It's quite a shame I have no plan to buy a PS3. This game would go wonderfully on a PC, were they inclined to disregard the money they'd likely be making by making it a PS3 exclusive. :/
If they were to put it on PC it would run about like Crysis. The only reason why its coming out on the PS3 is because the programming works with the ps3's hardware. I wish it would come out for PC though, but fortunately I have a ps3.