ditto, I understood it to mean one system had better detail then the other.
so to be serious
Although reproduction of electronic sound is a different animal logic suggest that various mechanized sound systems should or could be made to sound the same (with tweaking of bass, treble etc.)
well, seems to me that is pretty much the entire point of our hobby and pretty much the topic of most threads. I believe it usually comes down to everyone hears differently so everyone may have a different idea what sounds life like to them, which is why we try various pieces of gear trying to attain that life like sound. As each piece of gear is adding capacitors, transistors and even something as mundane as binding posts, they will each probably impart their own little flavor to the sound, not to mention by the arrangement of the circuits it could affect the sound stage etc.
There may be a whole lot of things going on in order to get those electrons excited and most companies have chosen either a different path or different components to get there - so each may have it's own sound even tho they are "mechanized" as you put it.
What I found was somewhat startling!! With the Sansui 2000X only, I could hear the speaker's breath contributing to a "live presentation" aura or feeling.
could just be me, but as you have been around here a while I am very surprised that you find it startling that one piece of gear may have better detail then another, especially a receiver as you not only have to take into consideration the power amps and preamps, but also the tuners, which as you have found out, can make a big difference.
And don't forget that one receiver/amp may sound better on a certain pair of speakers while the other sounds better on a different pair. That is what is usually called synergy. While I use synergy just to keep it short, it could be something as simple as one receiver is a better match for the frequency range of a particular pair of speakers and not a good match for another.
Which is why many of us have been thru countless pieces of gear looking for those pieces that when all put together, give us that sound we are striving for, but the sound you want may not be the sound I want....yadda yadda yadda