But that will never tell you with any real certainty if Random Joe will like your hot sauce. I don't buy based on market research- I try for myself. And I know many people that aren't going to pay $5000 for an amp because a group of people on an audio forum says its s'wonderful! They will want to hear it for themselves in their system, in their space. I also know many people who wouldn't even consider an amp at $5000 without seeing the measurements first.
Random Joe's taste in food is something quite different from his ability to taste- to detect flavor (and withstand a hotter sauce 😁). If you conflate the senses vs taste in the audio realm then the art of audio becomes impossible! Its not just Fletcher Munson- I chose that one because its so well-known that there is a switch for it (the 'loudness' switch) on many products. But there are other rules- here's one (easily proven by anyone with simple test equipment): the higher ordered harmonics are used by the ear to sense sound pressure. That one is ignored by the industry most of the time (which is IMO why there is so much stuff that is harsh and bright)... The masking principle is what made MP3s possible. While there are minor variations from individual to individual, these rules are shared by all people with hearing and they are far more alike than different! If you doubt that then all audiologists are just so many charlatans 🤣
The fact that you have to try it for yourself is understandable. As audiophiles quite literally because of limitations in measurement and how spec sheets are designed going back 70 years, despite whatever anyone has said about a product be it audiophile, reviewer, dealer or manufacturer, if his lips are moving he's lying. We've all experienced this so often in the audio world that we don't even think about it- we just have to get the product home to find out no matter what the spec sheet says.
We've had the ability for the spec sheets to really show what the equipment is going to sound like for some time. But it appears the industry would go into conniptions if they actually printed the evidence of why their gear sucks so much! (FWIW Bruno's efforts cannot be quantified since he doesn't sell a finished product. You only get to hear what someone has done with it and that isn't always good... so much for the amazing specs...)
So we still have to audition it at home and make up our own minds. Pretty well defeats the purpose of showing all those measurements, even for someone like yourself! By going with 'measurements only' you are open to confirmation bias. If you really want to be objective you have to drop the measurements thing. Sounds oxymoronic but this is the world we live in today...