This is getting even more interesting.
During the SB I toggled between Standard, Cinema, Vivid, and iMax Enhanced picture qualities. Vivid was hideous, but the other three, were pretty much equivalent that I could see, could only see a slight shift in color between Standard and Cinema. I was also (I'll admit this publicly now) just a bit disappointed in the overall pic quality, it really didn't look that much better than my 13-year-old LG did (it was an LED with local dimming, and the blacks on that set looked superb).
Anyhoo, I had to watch ABC nat'l news tonight, CBS was playing some stupid golf thing. I got distracted by something else, and soon there is some hockey game on the TV (ABC via EweTube TV).
The. Picture. Is. STUNNING!!! This was what I was seeing in the brick-n-mortar, now finally in my living room. And now I can see the difference between the HD, and the 4K cameras used (as described in my OP above). The "interview" camera, along with the "main" play camera at the mid-court rink point, are definitely a better quality than the crowd shots or the goalie angles. The black uniforms just pop against the bright white ice; this is cool!
I still can't see much of a difference between Standard, Cinema or iMax, but that's okay. I now have to figure out how to get my AVR to talk to the TV, my setup is a real pain to get to the connections compared to the Bat's, Tom's, and Chuck's systems.