All I’m getting is developer quotes and this one for pc world but no one is telling why the PS3 graphics are better. But don’t worry I’m persistent I will answer you.

When the PS3 was launched, Sony boasted about the system's 3.2-GHz cell processor capable of a supercomputer-like 208 billion floating-point operations per second. Although the games looked fine, only now are developers really starting to take advantage of the power of the cell CPU, the 550-GHz nVidia graphics, and the RSX Reality Synthesizer GPU. This is where the PS3 will start to pull away from the Wii and even the Xbox 360.

Pioneer first introduced its unicorn-like 16-layer 400GB Blu-ray Disc, we weren't sure if the thing would make it beyond the drawing board, let alone be compatible with existing BD decks. Over at the IT Month Fair in Taipei, Pioneer showed up to showcase the capacious disc, and better still, a DigiTimes report asserts that these are indeed compatible with Blu-ray readers already on the market. Currently, the 400GB disc is slated to hit mass production sometime between now and 2010, and yes it works on the PS3

what about the 400gb blu-ray will that fit on a dvd?

Well then quick call the developers of red faction and tell them there wrong, you can save the future of gaming..... do it man!

No there is a difference in graphics as game developers have already said they have pushed the 360 to its limits where as killzone only uses 60% of the PS3s raw power. Here have a quote.

Rick White: Yeah, we’ve got it to the point where we can’t even put an extra vehicle into a world, because it’ll blow the memory. Every little change we make we have to be hyper-critical about it because it could just bring the whole system down. We evaluate every little change in the game, and then we run our tools on it to make sure it isn’t going to break the game and then we move forward, so it really is about pushing the engine as far as we can, and pushing the hardware as far as we can, and then looking at what is the next set of hardware that’s going to come out. Where can we take it then? You know we’re already thinking about if we had XYZ X number of years from now, what would we do with our engine?
Could this really be the first sign that the Xbox 360 has reached its pinnacle? If so, it’s a worrying trend for Microsoft and Xbox 360 players because neither the Wii or PS3 seem to have reached their tipping points in terms of technology at this point.