That's pretty much how I view it. In the video, you can hear some differences. But in real the sense of "ambient" is much more pronounced for the MS such that the listener would not know it is missing in other carts until he experiences himself. Agree with you that seating further from orchestra like the way MS presents the tone will be more skinny.
This Moussorgsky A Night on Bare Mountain/ Leibowitz, AP45 is really great for hall ambient altogether with rise, swing, thrill that Bonzo said.
On this one it compresses and thins it out too much. Not sure if it is the recording, so would be interesting to hear with GC or Opus