I have answered in the other thread, but this was what I was referring to. I think it was a parent who posted but hope won’t mind giving the student’s contact if you PM.
http://talk.collegeconfidential.com/discussion/comment/22694374/#Comment_22694374
Also in the same thread (and perhaps same page too) there was one who was a marching band drum major, a varsity swimmer and a karate black belt. And may be one or two others too. That is a decent indicator (5 or 6 out of 22 who posted) that excellence in sports can be the differentiator, all other things being more or less equal. Also search for my take on the other thread by searching with the words like sport, athletic etc
Also heard from a former colleague about their C, from a reputed HS, perfect GPA close to valedictorian level and SAT 1600 and plenty of medical ECs, losing out to another top athlete student from the same school who happened to apply to the same set of BS/MD programs.