When will we ever hear turntables demoed fairly?

When I was a dealer I put a brand new cartridge on for a demo. He liked it but wanted one new in the box. I told to forget it and he finally took the demo. You would not believe the crap honest dealers have to go through. I once had someone I knew but who had bought it in Hong Kong and couldn't get it to work. I told him 4 times that he probably had the tape monitor switch on but he would not go check it. He finally did and of course it was the problem. This was early on Sat morning. This was mild compared to some. Like the guy who borrowed some expensive speakers and returned them when I wasn't there by throwing them through the through the door. And another who left a turntable on the porch when I was gone.

He had watched me put the cartridge on.

I started setting up tables in 1961 and it was always difficult. Martin Colloms once set two up for comparsion with identical MM cartridges and found that they did not sound the same. He finally had to change the stylus every time which destroyed any fast AB.

..that's what I suspected Stanwal....that 2 examples of the same turntable, arm, cartridge, on the same supporting table will sound different....then again....the same orchestra in 2 different halls will sound different.  There is no absolute....just enjoyment if you just let it happen.

So my final takeaway on my original question is that you can't achieve any real comparison that means anything objectively.So all claims about the superiority of a given piece of equipment must be taken with a grain of salt perhaps half a grain.As long as the industry and consumers are willing to make what seem plausible excuses about comparisons there will never be a objective reality about audio quality.Quite disturbing when you think about the money involved but that's just me.