Cream of the crop?

Would you say it's insanely difficult to get into an open merit MBBS program? It really sounds like one in a million people get into a good college and I'm starting to doubt if I can even get in. My grades have always been average and I don't think I'm gonna top the MDCAT either. So for the MBBS student/doctors of this subreddit, were you the cream of the crop? Or were you surprised to able to get into med school at all?