And how do you know that? Were you present at his interviews? As always seems to be the case, everyone assumes that this is just a numbers game. High MCAT + High/Decent GPA = Admission. Doesn't always work that way. I've seen people with better stats than the OP's not even get interviews!
Maybe the OP's ECs weren't viewed as being particularly impressive. Maybe his personal statement sucked. Maybe his secondary essays (if applicable) were not well written. Maybe his LORs weren't great. Maybe he doesn't interview well. Maybe all of the above. Who knows?
To the OP, hang in there. The fat lady hasn't sung yet. She may be warming up her vocal cords, but it'll be at least five more months before she starts belting out the song that none of us want to hear.