I think it really depends on the school and it depends on what kind of applicant you are.
Some schools will reject you if you're statistically overqualified and your interview wasn't GREAT (state schools or schools with a commitment to providing health care to a local area). The higher your stats, the more you travel = more likely you'll go right home again after the 4 years.
Some schools will accept you if your stats are good, even if your interview was awful (usually safeties looking to boost their own stats on the entering class).
Some schools may be looking for people who have clinical experience and who rock the interview--and be willing to take a hit on statistics (schools that are having issues with their students transitioning from the classroom to clinicals).
The big scam is that most people would be able to pass med school--it's not about intellect as much as it's about determination and motivation. Being a good physician isn't about getting A's on tests, either. It's about time management, stress management, judgment, ethics, business, and a genuine compassion for the patients.
The whole admissions process is designed to weed out the people who "don't want it bad enough," so that they don't take up valuable space at med school, pull down class morale, and be ineffective clinicians one day. 👍