depends.
definitions first:
intelligent: being able to integrate ideas, come up with new ways of looking at thing.
smart: knowing FACTS. does not imply being creative or able to come up with the facts on their own
(take everything with grain of salt, these are generalizations, so always not perfect)
if you wanna know who does well in med school, i think its about personality. if you were a gunner you most likely will be one in med school. its hard to change who you are. i hate to say it but high test score is about MEMORY period. when you initially learn the material, yes it helps to COMPREHEND, but you see it so many times over the years that it comes down to how much you REMEMBER. plus if you didn't understand it, you can go home and read about it again and again. as you all know students learn to LEARN what they need for exams. there are books written about USMLE, specific courses and wards and everything else you can think of for medicine. even the dumbest one in the end will 'catch' up and know as much as the next person (if they passed everything). so in the end its really hard to say based solely on test scores who is really intelligent and who was just smart. bc if you see the material over and over again that you'd be stupid to not know them. 2 ways to get high scores; have exellent memory or study ALL THE TIME. neither of these is a measure of intelligence. there's nothing really that med students have to 'think' about. everything is already been thought of. most likely your question was already asked or the answer is not known (otherwise it would be in a book somewhere and you could have seen it). we're here to absorb FACTS.
test scores in not proportional to intelligence. its proportional to how much you remember. now if the questions were not multiple choice and you were required to synthesize materials (like in graduate school) you might be able to correlate. but in a multiple choice exam like ours, people memorize KEY words and those who remember more of those will do better. that is not intelliegence. that is being smart.
high test score is not proportional to being a good physician. those who tend to score high are in competitive specialties (optho, rad, ortho, neurosurgery) and they are not the 'good docs' you think of. they tend to be the nerdy, introverted, the not 'people-person' type. of course these are generalizations. but my point is that a 'good physician' is the one who makes the patient feel and be better. i think alot of that has to do with personality and not so much knowing lots of facts. especially today where everything you wanna know about something is available to a physician, its easy to find out these facts.