Fact is, the graphics off the PS3 dev kits with a 7800 in them are better than the final 360 kits... once the RSX chip gets thrown in, there really WILL be NO comparison.
I\'m not saying the 360 movie isn\'t pretty, cause it is. Magnificent, like what a absolutely-top-of-the-line PC would be able to do. But the PS3 video is more like a high-def FMV, which is just absolutely spectacular. The physics and effects showcased, not to mention detail (especially of objects - the robot, enemies) is just much, much better on the PS3.
*EDIT*
Ugh - I knew I shoulda skirted the issue!