Jay didn’t seem too impressed with the sound, and he couldn’t talk his way around it, because you could see it in his facial expressions.
Respectfully, to me Jay's behavior was one of thoughtful analysis mixed with some confusion. Was he struggling with not being impressed, or shocked by how good the experience? He did mention mention the balance of the audio to be very good and more like a live performance.. His questions about Sub adjustment indicated to me the first time exposed to open baffle bass. His own system probably produces chest thumping bass due to room mode. Overall, I think Jay was being cautiously reserved not overreacting either direction. Hopefully, later videos will clarify Jay's impressions.
There is no way to judge anybody's system based on YouTube audio. I checked out a couple of the sample tracks and understand why they were chosen. Will definitely reveal the quality of a superior system.