The Science of Vinyl/Analog Setups

It seems to me that there is too little scientific, objective evidence for why vinyl/analog setups sound the way they do. When I see discussions on tables, cartridges, tonearms and even phono cables, physical attributes are discussed; things like isolation, material, geometry, etc. and rarely are things discussed like wow, rumble, resonance, compliance, etc. Why is this? Why aren’t vinyl/analog setups discussed in terms of physical measurements very often?

Seems to me like that would increase the customer base. I know several “objectivists” that won’t accept any of your claims unless you have measurements and blind tests. If there were measurements that correlated to what you hear, I think more people would be interested in vinyl/analog setups. 

I know vinyl/analog setups are often system-dependent but there are still many generalizations that can be made.