Wow ... more arguments about insignificant graphical differences between the two platforms.
From what I have seen this generation I think that it is fair to say that the difference between the XBox 360 and the PS3 is (much) smaller than the difference between the PS2 and the XBox; this is made (noticeably) worse for the PS3 because it is far more difficult to achieve decent performance out of the PS3 so it has difficulty obtaining similar performance as the XBox 360.
Even after 3 years (and hundreds of man-years) of development of the best developers in the world the PS3 has yet to produce a game which is dramatically better than anything that has been produced for the XBox 360; ultimately I think that it is fair to say that we will never see a game which is that far beyond anything the XBox 360 will produce.
