So the 360 version of CoD 4 will run at a lower resolution than the PS3 version? I thought it was announced that they'd be running the same resolution.
I find it odd that the PS3 version would have better textures considering that textures are typically memory limited and the 360 has more memory available. That said, it's very likely they'd just use the same textures across both platforms since they have very similar capabilities in that regard.
I also find it odd that the PS3 version would have superior lighting since additional lighting passes/effects are typically, although not always, fill rate constrained and the 360 has more fill rate than the PS3.