You make no sense here. If the MCAT is something that is possibly to STUDY for, then Ivy League applicants are going to have to work just as hard to do well as people at state schools or anywhere else. If anything they are going to have to go against their brilliant natures just to buckle down, especially to master such boring material as, say, the physiology of the kidney. And they will have to backtrack to relearn physics without the calculus. Oh, and they better practice up on multiple choice! (I'm assuming no Ivy League professor ever stoops to this form of exam.) Just going to such a school is not going to guarantee anyone a 30 or more. If in fact attendence at an Ivy League school correlates with "having what it takes," as you say, how exactly is that going to HELP someone on a test that you also seem to be claiming measures sheer dilligence? Especially since, in general, the more prestigious schools tend to emphasize material that's more theoretical in nature in their curriculum, as opposed to the regurgitation that would stand a person well for the MCAT. (I mean come on, the MCAT's not the world's hardest science test, and it's certainly not theoretical.)
The MCAT is not a cakewalk for anyone! And just because students at prestigious schools tend in general to be pretty smart, does not mean that people at state schools tend in general to be pretty stupid. There are smart people going to every kind of school, and to a reasonable degree med schools seem to have a grasp on this fact, I'd say.