Happens all the time.
Used to be all CD players were considered "perfect" but people still heard differences. No explanation until "jitter" was discovered.
Until then people were told it was "all in your head".
I'm sure the measurements still haven't caught up with everything that can be perceived by the human hear.
I think that the emotional side of the feelings we perceive can not be measured while listening music, and other subjective perceptions. Mainly those are related to the relation between you and the music played, and maybe the way you feel, sad, happy, stressed out, tired, etc...
Mitch I don't know what kind of engineer are those, but the soundstage is a result of location of the drivers/mikes while recording, phase, and delay of the signal and it could be altered during the recording process, by different methods, and of course measured and controlled, here is an article about that process, written by Christopher Huston Senior Acoustical Engineer of Rives Audio, a recording engineer and producer with over 80 gold and platinum albums to his credit, with over 30 years experience in studio and listening room design. His experience and insight into this subject is second to none, and how to control acoustics in different evironments...but it is true that it is a combination of factors and not very easy to measure, IMO it is more a result, than a parameter to be measured...
Sound that at the end we screw them all in our homes...