"....you have tests that demonstrate the contrary......"
I certainly do, my ears. If to your ears all audio amplifiers sound they same and Emotiva is your benchmark for excellence, then you're a lucky person. You probably claim all acoustic guitars sound the same as long as they "measure" identical. You still haven't said what amplifiers have you actually heard to arrive at this conclusion . Your conclusions seem to be just by reading the measurements. As mentioned before, if the measurements were the only criterion in sound quality, all tube electronics belonged in the dumpster .