Killzone 2 is a fantastic looking game, I don't think surpassing it will be an easy task. That's not to say it can't be done. I'm sure the 360 is still yet to be pushed to its limits, and there is a good chance that another game could surpass the graphical standard of that of Killzone 2. It could be Gears of War 3, could be something else. But too my knowledge, the PS3 has the more power hardware, and if developers are good at developing for it, a high quality standard can be produced from the system, and it, like the 360, is yet to be pushed to it's limits, I would think.