... how do you explain the exceptional, great and outstanding sound quality of the audio recordings of my systems and those of others?
That's easy. It's either or both of the following:
1. You have a preference for lossy, compressed recordings. That is not at all uncommon - many prefer the SQ of sources such as Spotify and YouTube, which are inherently compromised by design so as to limit file size.
2. You're watching a video of an audio system, so what you see influences what you think you hear, a/k/a "confirmation bias."

