To all.
The question or exercise I was trying to do can we use science to choose our speaker with objective measurements.
My view is that: It depends.
I mean, in a broad sense anyone and everyone can use science to choose a speaker. As people have indicated, a lot of science has been done showing the type of loudspeaker response most people are going to like (in blind tests). So you can always just seek speakers with suitable measurements, and there you go. Done.
However, whether this approach is appealing, or actually works for choosing a speaker is ultimately more of an individual thing.
For me buying strictly on measurements doesn't work. They have not predicted for me which speakers I would actually like when I listen to them (under sighted conditions). Now, some people are constituted to say "Well, I'm looking for accuracy, so as long as it's accurate, I'm good."
Or "I trust the science behind these speakers, so I can just relax and enjoy them." That works for some people, but not for me (and some others).
What counts for me is whether I'm actually enthusiastic about what I'm hearing. I've listened to numerous speakers that would fit within the paradigm many here are seeking; sometimes I liked them, sometimes I was left cold. So, I have to listen for myself.
Further, I've had a life-long interest in live vs reproduced sound, so I'm constantly comparing the two. I favor systems that, to my brain, remind me more of the real thing, especially timbrally. When I close my eyes and listen to an acoustic guitar, especially mine, it creates a certain impression or vision in my mind, a sort of golden sparkly strings, the warmth of the wood. But when I listen to an acoustic guitar like mine through many speakers, the mental impression becomes like the color is "off," or like it's in black and white. It's devoid of the beauty I hear in the real thing. But some speaker systems DO seem to recreate some of the "right" impressions in my brain. And it is those ones that I find compelling, the ones that make me want to sit and listen, where others make me want to just walk away.
Now, this all may be a mesh of my own quirks and biases, and even perhaps some actual true perceptiveness on my part. The problem is: I don't know. The best science we have was not directed at verifying my perceptions - it was directed at verifying what most people will say they prefer (not specifically "does it sound like the real thing?" or quirky things like "does the guitar sound timbrally right?" etc).
That's not to say it couldn't be studied; of course it could. But it wasn't. And to a degree it would be possible to vet some of my own impressions via the blind tests used at the Harman Kardon facilities. I could blind test speakers and ask myself "does that guitar/voice produce that 'rightness' of timbre or not?" And perhaps discover which ones reliably do that for me.
But, I don't have access to such facilities to go through those tests, nor can I do it at home. The best I've been able to do is to test various speakers with my own recordings of instruments and voices I know, and sometimes do live vs reproduced comparisons. And just use my own subjective reactions when auditioning speakers. It's certainly worked out well so far. I have owned numerous speakers that I find really satisfying.
So, just due to my own quirky history and interests and biases, thus far working strictly off of measurements won't work for me. I have really liked some neutral speakers, found some left me a bit cold, and sometimes liked colored speakers. I need to hear a speaker to determine if I find it compelling.