Its hard to bridge the gap when it comes something that is subjective and then numbers. Subjective is just that, it based on personal perception and tastes. Numbers and measurements are just that nothing more and nothing less, its black and white.
Also it seems many have differences in opinion on what is accurate. Accurate is not something that somebody can identify by ear day in and day out to the degree that test equipment can. People cannot identify frequency tones properly, this is shown by graphs of actual versus perceived frequencies.
Via test equipment accuracy can be measured, what goes in must come out with no change what so ever. This is impossible to do but can be done with minimal deviance from input to output over the audible frequency range. Any coloration introduced is not accurate by definition.
So for a person to say A is better than B, what is that being compared to? Are his ears certified and calibrated by NIST saying that this person should be listened to when they say something about audio? Or is it more that its more to their liking as opposed to something else and what they believe to be accurate.
I haven't measured my system but it sounds good to me. I dont really care how it measures. I am curious and will probably measure its frequency response and do a waterfall on it etc, but it wont change my opinion of my system. If somebody doesn't like them, I don't care.
In the end i guess what needs to be discussed first is what is the stereo being compared to? Cant be a real band, there is no way, its impossible. It would have to be the incoming waveform from a song to the amplified version on the output side. If the two are the same minus the difference in gain the system is accurate. If it has changed its not.
So I guess through my ramblings I just want to know what is accurate in the first place? (you cant say the band or how it sounded in the studio, unless you were there you dont know)
From there is it fair to say that any deviation from that accurate sound is wrong, or just not to some peoples liking. Some like more bass others like more treble whos right, or are the both wrong?
Once a control is established then comparisons can be taken, until that happens nothing constructive can be had from either side. Just my .02