It seemed to me that Jay was polite but not blown away. The expectation of such a large, grand system could be a tall order (no pun intended). The music selection on the video didn't seem to match the dynamic capability. Not exciting music.
If the listening level is around 75 to 80 db you don't need this many speakers to get there. It's way over kill imo.
You can get an excellent DIY system for MUCH less money that plays plenty loud without looking like overpowering skyskrapers and probably sounds better being played at volume matched to the room size.