Sound is subjective and folks have problems with that. You can't quantify subjective, it's not directly measurable. You can't measure the taste of dark Chuao chocolate, just like you can't measure good sound. You have to experience both. Not just once, but repeatedly, to start catching subtle layers, to start understanding. It takes a while to understand the true extent of difference between the Chuao and a Mars bar, just like it takes a while to understand that in real terms, if your sound is off by 10% its going to sound crappy. The other pitfall with the subjective bit is that everyone would claim to have great SQ sound. "Sounds awesome to my ears", kinda thing.
80% of folks are left brain dominant. This is the analytic side of the brain, the side that is better at processing information. Its the side that needs measurable proof to believe. This half of the brain tries to build the whole from bit up.
The right side of the brain is more intuitive. It works by deconstructing from the whole down to the bit. Each side of the brain controls the opposite side of the body. Experiments have proved that instructions are better received via the right ear so that the left brain can process it, but music appreciation is better via the left ear. A big + for those of us who sit on the right side of the car
You're not going to get good sound without some amt of measurement and calibration. But in the end if it measures right but sounds wrong it's wrong and vice versa.