I remember those demoes, they looked similar. One thing I did remember though was that the urban areas looked better on the 360 than on the PS3. But the forested areas looked better on the PS3. But who knows for now. We'll just have to wait and see.
I have to disagree, the urban areas seemed to have more detail , better lighting ect in the PS3 demo.
I can't find the comparison images, but there was an image out there that took an indoor scene between the two consoles. The lighting wasn't as good in the PS3 version, like I think lights were missing or glitches with the lighting I can't recall.
Around the 50 second mark is where they do a comparison and you'll notice the PS3 version looks a bit better.
At 56 seconds was the comparison I was talking about, notice how the lighting turns red on the wall to the right and the light source on the left just gets this overkill bloom on it that the 360 version rendered properly.