I understand there are poor test-takers and I've actually argued before how there SHOULD NOT be a standardized tests for schools, SAT OR MCAT lol.
I commend you for admitting you had a hard time getting to where you are and that you're still on here which shows you're about to (or already did) undertake the rigorous path to medical school.
-but, first, i have no idea how you HAVENT met this people. Some are just modest, but i've even spoken to a black friend of mine who joked with me about how much it helped him get into an ivyleague med school. and second, my main first post i feel is getting skewed, i used the MCAT as an example, but kept saying "mcat/gpa/ec" when i really just meant that the whole overall application of two people could be the same but if a under-rep. race is listed that person gets in.
And as for psychologists, of course they're gonna say that, you're paying them to tell you things that make you feel better 
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-ok sorry, i apologize that was effed up, im just kidding, im sure you are very intelligent kid (no sarcasm, as i said, you are here applying, so, gl)