n=4, but let me share my side of the story. Three of my really good friends and I all received 521+ on the MCAT (521, 523, 524, 525). We all had GPA's ranging from 3.6~3.8, graduated from a top 10 school, checked all the "pre-med" boxes, and had extensive research. Out of the four, three people will be matriculating in mid-tier programs, and one is going to a T20 school. Some of us received interviews from T20's and some T10's, but this is just how things worked out and we're all content and excited to be future doctors. My point being, 520+ will not guarantee you a T20 acceptance, and even though it seems like some med schools are stat-hoes, most schools are holistic. The applicant pool has been expanding and becoming more and more competitive, which is the result of the rise in median MCAT scores and why people who seem to be extremely competitive still don't get in. My last point is something I learned the hard way: never try to understand or figure out med school admissions, because it is impossible and a waste of time. Spend that time in improving your application and just ride the wave.