To summarize, Harvard =/= Lebron James. Sports =/= Law. Height =/= LSAT score.
Most people cannot achieve a 163 that is roughly the 80th percentile of LSAT test takers. If my math serves me right it seems only 20% of test takers can achieve a 163 or higher.
Not everyone is meant for tier 1. If Lebron James came to me and said yo man why don't you just dunk from the freethrow line when your man stays a few foot off you. My answer would be as I imagine anyone on this site woudl be I cannot dunk from the free throw line Lebron. Although I myself am 6'8 260 pounds ( I think I have a bit more body fat than LJ though . The bottom line is me and about 99% of NBA players simply do not have the athleticism to do it. Likewise when someone says anyone can get a 163 or 170 on the LSAT it is the same as Lebron saying why not dunk from the free throw line. Point being not everyone goes to Harvard law school. The reason Harvard is impressive is because roughly 99% of the population could not attend it. Just like 99% of the population is not a 6'8 260 pound athletic superfreak and Lebron is paid millions for having that skill.
LSAT score is the same thing you are essentially born with the mental abilities to get a certain score. It is for all intensive purposes an IQ test.
It is a standardized IQ test really
It is an IQ test in being able to think a certain way. It is studying patterns etc not facts. This in turn makes it more of an IQ test than a run of the mill law school test. It measures your reading comprehension, ability to figure out patterns, and ability to think quickly. I imagine there are a lot of people that simply run out of time because they cannot think fast enough. Just like when you go to law school people run out of time on exams. It often has nothing to do with how much or little they studied it has to do with their ability to think quickly. This is something that can be refined, but some people think more quickly than others. So yes the LSAT is an IQ test that measures someone's ability to think like a lawyer. It does not measure tangible facts, memorization, it determines if you are capable of thinking a certain way and that is an IQ test.
To further demonstrate that is somewhat of an IQ test even if you took 100 people and forced them to do the same exact method of studying. I.E. forced them to take a Kaplan test etc 50% of them would finish in the bottom 50%. Again as surprising as it may be if everyone adopted your method of studying only 20% of people will end up in the top 20%.