The PS3's architecture is significantly different than the Xbox 360... 3 cores vs. 9 SPUs. 512MB of ram vs. 2x256MB of ram. That causes a lot of issues to port content from one system to another.
The 360 is far closer to an older PC in how developers approach it - which is why you see a ton of cross PC/360 content, because getting them optimized and coded varies very little. Comparatively, that isn't the case with the PS3.
Back from the dead, I'm afraid.







