<p>^Congrats, but you are an exception.<br>
I heard from several top caliber students that they did not do as well on math as they anticipated simply because material was from several years ago. Another point is that if someone predicts low score in Reading (which is close to impossible to improve), then math is their ticket to compensate. Anyway, very few IMO will do very well without any prep. Most can do very well with some customized to their specific needs prep. And, it is very true that there is a group that simply tests very well which has nothing to do with having superior intelligence. I read somebody’s comments that they did very well on practice MCAT without prep. (and this is no walk in a park, most prepare for it for several hours every day for many weeks)</p>