each system has there own power over each other so in most case you'll see xbox having better gfx in most games but in other cases other systems can have the advantage depending how well the work is being done for the system (look at sonic heroes for a perfect example, gc had the best version compared to the other 2 ;another slight adavantage was with the ps2 version of soul calibur 2, mind you it was made on ps2 hardware so the ps2 version was arcade perfect where in the xbox version there was some slowdown that the ps2 version didn't have (inferno stage)