If you played it on the Xbox/PS2 it will look about the same. However, no halftime highlights - functionality is same as PS2. May be harder to get updates for the PS2/PS3 version as there is no 3rd party editor like we have for Xbox.
Debate on which game plays better will go on ad infinitum, but obviously the folks on this board vote for 2K5. Let's put it this way, with updated rosters and schedule for 2007 season, you are in just as good shape as Madden...maybe better, but I am not getting into that flame war.
My $.02 - 2K5 all the way for a variety of reasons.
C