I just want to bring to light not everyone who got >37 "had enough money" or had "parents [that] could throw that kind of cash around" for studying for the mcat. Not all of us are born with a silver spoon in their mouth, not even a wooden spoon. Some of us worked FU*******&^$&^%$******ing hard for a good score.
I worked the entire summer with classes to pay for the luxury to afford the AAMC practice tests. I networked/asked around as much as possible to find a friend who GAVE AWAY FOR FREE all the BR books, TPRH, EK, ect. I'm indeed in debt to him forever and I am so lucky. I did not take any private lessons/courses for the mcat - just self studied.
I grew up mostly on food stamps and in subsidized housing in a single-parent household and worked soooooooooooooooooooooooooooooooooooooooo hard to get scholarships to pay for my university education at my public state school in Florida because my mother cannot afford it. I know this doesn't really center around your main point in your post, but I just want to bring to light that not everyone had Daddy to pay for rent and AC and netflix and mcat courses if they get a good score. I even had to give up following the SN2 schedule because it was too much. I couldn't do all the practice problems and didn't have the time due to work and other commitments. At times, I felt so defeated.
I guess your other presuppositions are true that maybe we're just good at multiple choice tests then. But I would say it's much more complicated and dynamic than that. A million factors goes into it. Anyways, I was NOT expecting in a million years to get a 38. At max, a 36 or 37 IF there was a TURE GOD haha. I was relying on my AAMC average of 35 because after compiling some rudimentary statistics, you should get your average, so I predicted that. I prayed for that. But I really felt like I got 33-34. However, as you said, a 38 is not much different than a 36 or 37. In fact, AAMC published a document for how medical schools should interpret your score and they said there is ~60% confidence that your "true" score is +/- 2 of your real score -- Not very confident in layman's terms. And a person who scored within 3 points of yourself could theoretically have your true score too (e.g a 35 can range from 33 to 37 and a person with a 38 can range from a 36 to 40. Both people overlap their true score range at 60% confidence). So I wholeheartedly agree that the difference between scores around yours and scores above a certain line is so marginal.
So again, I know you were trying to bring the higher-scorers back down to Earth, but it strikes me PARTICULARLY hard questioning and possibly assuming that if you get a ridiculously high score (and I mean I thought at the onset that people with 35+ were GODS), then it most likely means you come from money or are decently off. It may be true (and probably true for the majority), but saying that sort of belittles the fortunes of non-monetary valued happenings that others have come across. When I showed friends and family my scores, people LITERALLY (not in a figurative sense) screamed and wept. I'm in total shock still. And I thank you for the support of this forum. Truly.
Anyways, I'm sorry for what I said above/before, but thank you moop
EDIT: Just to be clear, I was definitely not arguing anything or taking offense with anybody's posts or sayings, but setting up a platform/saop box to let people know what I said above. Of course on the Internets, anything you say, even with good intentions, someone will have something else (and possibly taking offense) to say about that lol