So for those of us who can't watch the video right now, please tell us what it explains?
Summary of this video, well worth watching:
http://youtu.be/YECC8u0nPO8
He prefaces the video by explaining that this demo is more linear than the previous one. Not so open world.
Lighting
Fully dynamic with global illumination. Great looking. Both consoles are identical in lighting, shadow quality and texture maps. Only difference between them is that gpu accelerated particle effects are reduced on Xbox one. They didn't see this in combat. Only witnessed the difference in certain situations like when you jump on a switch.
Overall it is one of the most impressively lit games this generation.
Frame rate
Fully dynamic frame buffer in this demo, while the previous one had a fixed frame buffer. Ps4 sometimes has an advantage of 5 fps. The game struggles to keep 30fps, partcilularly in the forest section. Each console can drop to a low of 15fps during the boss battle.
Ps4 has frame pacing issues. Sometimes see duplicate frames output in a row. This creates stuttering. Timing can fluctuate between 16ms and 50ms. Not an issue on xbox one. Much cleaner experience on X1. Though the overall frame rate is rough on both consoles, so the overall experience is still kind of rough.
Resolution
PS4 vs XBOX ONE
1980x1080p (max) 1568x882 (max)
1600x900 1408x792
1568x882 (lowest) 1368x768 (lowest)
PS4 hits highest rate when nothing much is happening, lowest in battles. Similar happens with xbox one. Xbox one always runs at a lower resolution than the ps4. Never matches resolution.
Post processing
Both consoles suffers from aggressive post processing AA, which creates blurring. Overall, ps4 is always clearer in direct comparison.