The potential for both the X360 and PS3 isn't even close to being touched. Just look at the difference between Xbox games from 2001 vs. ones being released this past year.
Perhaps once we hit the end of each's lifespan, the latest PS3 games will be better, but until then there will be an even and insane progression in the realism of games.
i was waiting on a moment, but the moment never came. all the billion other moments, were just slipping all away. i must have been tripping, we're just slipping all away. just ego tripping.