I don't trust anything from Digital Foundry, especially considering their obvious bias toward MS and the 360 in nearly every one of their head-to-head comparison.
There's this thing called reality. It's not always even-steven. What you call bias is a difference in quality of multiplatform games. Get a job at Sony, improve their toolchain and help developers tune their games towards PS platforms. It's that simple.
As for the quasi-technical observations (in case it matters: I played the game so it's not based on YT videos)
- shadows fading in the distance are much better than shadows popping-up but the distance at which it happens is disappointing; I was also wondering if it would be feasible to fade from correct shadows to black circular blobs as shadows in the distance - would it look good enough if fade happened at the reasonable distance from the player?
- particles in general and explosions specifically are super underwhelming; didn't really pay attention if they were bouncing on the z-buffer like it used to work in Reach but there were fewer particles and explosions just didn't have the OOMPH! i was expecting (this may be art issue but probably it was dictated by the GPU budget)
- enemy disintegration looks awesome
- character details and animations have improved significantly: faces finally look acceptable and skin SSS in the cutscenes interacts wonderfully with lighting in the environment
- I like the lighting in general: it's less flashy than it used to be which paired with the art style may finally (but slowly) put down the "canned dude is shooting pink lasers to yellow fairies" BS
- light shafts are overused but I can see why they did that: they're faked but they do give the sense of volume to the light and environment which is not necessarily the case with other implementations (e.g. Bulletstorm had two suns for double the god rays awesomeness but the way they looked was IMO shit)
- I really like the voxelized loading screens
- menus and navigation are confusing as usual
Also: kudos to Laa-Yosh!
Art style-wise (yeah, non-technical) I don't like some of the enemy designs 343i created. But that's completely subjective.
BTW: Corrinne Yu got
patent filed on Single Pass Radiosity From... and I can't decipher the remaining two words. Depth Buffer?