practice of medicine isn't like that. exams are. 80% of the 260-270s STEP1 scorers I know are button smashers. My scores on exams, from in house to shelves and board practice tests to boards all improved mindlessely memorizing. Most med students who get in meritocratically are sufficiently intelligent to make the logical leaps intuitively asked for on boards. It isn't hard math, physics, comp sci, philosophy or even tough basic life science experimental design. It mostly a dedicationvcontest. It is not heavily aptitude based and largely skewed towards long term heavy memorization. There is a reason carib students who often failed to break a 30 on three consecutive MCAT attempts after 3 months of studying still manage to sometimes firecracker away to pull a 260 out of their ass. There is a reasons schools with MCATs 2SDs above other scores hardly have STEP scores 1/ 2 SD over the same schools.
Rate limiting step to success on med school boards is the product of memory and dedication and memory is considered but a fraction of fluid intelligence. It is a rather narrow scope. There is a reason aptitude test scores correlate only weak to moderate with STEP exams but highly with other aptitude tests.