None of these videos impressed me either, but I understand the cam op, cam settings, filming conditions, and particularly the grading play a huge part. I'm surprised that there are a number of videos from the 4.6k out and no one's really nailed one to show us the true potential. We need something from Hook I guess. His URSA video is probably the one you saw that you liked.
They should take a page out of AJA's book, where the later CION demo videos look absolutely spectacular - Arri-like in places - because they were filmed to the camera's strengths, even though the usable dynamic range (some 8.2 stops) is rather unforgivable.
I've seen RED Epic footage get botched so hard by the cam op that it looked like it was shot on a 7D. When you experience that enough, you get some perspective.