Well from that video her nipple clearly (upon 5 time magnification) has two more pixels on the 360 version but the lighting isn't as good.. maybe that is a good thing
edit: ok, am I just seeing things or is the water (starts at 1:04) in the panning beach shot at the end flickering in the PS3 version and the 360 version seems fine but not as smooth of a framerate (looking at the pier at 1:17)
just called Circuit City.. sold out of the 360 version, over a dozen in stock for the PS3.