How does this make sense, any sense? Any sense at all??

KEF ls50 + beefy amp to drive them + powered sub can match most anything you would ever put in that same  room. 

But the sub will have to carry more of the bottom end as room size increases. 

So room size is the main determining factor for how big and likely expensive a speaker need be to perform at the highest level full range. 

If Full range not of concern then things are also much easier. 

The stereophile class ratings are only useful to a certain extent. It’s always reasonable to question what you are really getting with products that cost way more than others.

 I don't think anyone expects that a $1K speaker to compare to a $10K or $50K product

If they put a price tag of $50k on the LS50, it would be compared to other speakers in that price range. It would not be compared to $1k speakers. If they put a price tag of $500 on a magico, it would get some good reviews some bad reviews but nobody would dare compare it to a $50k speaker. Its all perception. 

Do you live in a dilapidated trailer and tell your friends that its the same as a $5,000,000 custom home?

Do you not understand the difference between a 1984 Le Baron and a 2020 Porsche?  Or are they the same because the have tires and an engine?

Is Natural Ice as good as Chimay?

Are you able to tell the difference in quality in anything or is it just Speakers that are all the same?

Are you able to tell the difference in quality in anything or is it just Speakers that are all the same?

Does the $50k speaker have a flatter frequency response than a $100 speaker? What does the former do that the latter does not? Why dont you stop beating about the bush and show us the measurements as evidence?

I think class rating also factors in price and value. Part of the reason ls50 is in class a is because it's a great value and probably better than most speakers in its price category.