After talking at Socom practice about graphical attributes of the two systems, SithWarrior made the very astute point that the only good way to compare is to see how they look playing the same sports games---the best comparable. NBA Street homecourt is a great title (I haven't picked it up yet), but I LOVED NBA Street 2---I used to pull out my multi-tap and get 2v2s going with my friends on the ps2.
Look at the list of videos--one compares the two side by side. Pretty cool way they did this. There are some differences, but to me it is like Coke and Pepsi. Different, but a matter of taste. Either way, next gen games are just getting sick looking. But I think that it seems that there is little meaningful difference between the two--and suggestions otherwise are much more the beliefs of fanboys.
Bottom line---these systems are going to be a lot more alike than different. Other than no rumble in the ps3 controller (and no replacable batteries) vs no motion sensor in the 360 controller, I think the early evidence suggests that the platforms each have technological advantages and disadvantages over each other. It looks like a draw to me.
I went 360 because xbox live is a superior gaming network and the greater installed base and titles should result in more games on the 360 than on the PS3 (not unlike how the PS2 beat the Xboxoriginal).
Comment