Onhwy61,I cannot debate your statement as to recording equipment, etc. I know there are HUGE differences.
However, I would like to add that if you take a fairly close miked (on good equipment) recording of individual or groups of individual instruments, you can readily hear a difference in the final presentation played back on different speakers and/or designs.
I have tried this with sax, clarinet, flute, strings and acoustic guitars. By using the same recording (hence, placing the speakers on equal footing for direct comparison)I have noticed substantial differences in how the speakers in comparison handle harmonic structure and overall accuracy of tone.
Of course, I guess one could argue room effects due to radiational patterns of the speaker, equipment interface or whatever but they're substantial differences in the presentation.
It's amazing how drivers out of phase suddenly sound out of phase.
With the absence of any standard's, I guess one has to go with what they perceive as the most realistic, hence all the designs, etc. That's perfectly ok with me. Free enterprise is a wonderful thing and I for one would never want to hinder it. However, my thoughts do evolve around trying to find the most faithful reproduction based on what meager comparisons I can derive.