It's inevitable that there'll be *some* delay before video frames make it to the seat-back displays, probably much greater than the delay pilots see on their MFDs. I don't know much about the A380 entertainment system but the feed may well go via a hard drive on the central server, and the in-seat part of the entertainment system probably buffers some frames ahead of time as well. Even a barely perceptible half-second delay is 120 feet at 140 knots. I don't think it's fair to critique these landings as "short" without having more information about the display lag or having other evidence as to the touchdown point.
P.S. The Belly of the Beast video is awesome, thanks for sharing.