I can't say I'm too impressed with either of these transfers based on the screenshots. The HD DVD is definitely losing detail, no doubts. The striped jacket on the guy in the left side of the screen in facehd2 loses a LOT of detail. Substantial portions that should be striped turn into mush.
The BD version unfortunately has a weird processed look to it. Could be sharpening.. but not sure. Looking at facehd1 there's just something funky going on over Travolta's ear. Switching to the BD version it almost looks like when you scan a magazine image into the computer and get that moire effect. I don't know, hard to describe.. just "processed". Still I'd easily give the nod to the BD version here.