As you are finding out, high stats aren’t going to guarantee you anything. You have zero acceptances, so you’re not really in a position to be turning down interviews. You could have applied to 5 or 10 more schools and be in exactly the same place. Everyone else applied to those same 5-10 schools as well.
When I had my first interviews, I had a back to back with a little lay over in the middle and took the train from Georgetown to NY Med. They both were disasters and I was feeling pretty bad about my prospects. At the time, and for many weeks after they were my only interviews. Georgetown, the medical system, was in a well known financial turmoil and the people who interacted with the interviewees were a bunch of arrogant jerks pretty much across the board. Newsflash, GTN isn’t that school in Boston, and never will be. They start, start!, by saying that we were very lucky to be getting an interview there, but getting an interview doesn’t really mean anything as they only take about 10% of interviewees. It actually went downhill from there. Several times I was thinking WTF am I doing here and why are these asshats wasting my time and money? Pretty much the only nice thing about GTN was I could live there and party like a rockstar in DC, where I had some previous experience partying like a rockstar. Then after a couple of days of debauchery, I hopped off the Acela and was greeted by Albany, and NY Med, in the winter. Cue the losing sound from The Price is Right.
I immensely disliked both schools for different reasons, but I never once, for even a second, thought I’d rather throw it away and reapply than spend 4 years with the delusional arrogant folks in DC or in the dreary rust belt escapee that is Albany. Fortunately I ended up where I wanted to be all along. Though I wouldn't have turned down that school in overpriced and very cold Cambridge.
As for residency matching, competitive specialties are competitive. You are competing nationally against all comers. You need to bring your A game from the jump and be more than a standard deviation above the mean. Harvard scores better than NYM on standardized tests because for the most part they get better students who average higher scores. One could argue you may be better off being at NY Med because you may be a big fish in a smaller pond. You could find more opportunities, etc. Also, don’t be surprised to find that you go from 2 SD above the mean in college to quite average or even below in medical school, because now you’re swimming with sharks. It happens, and to a lot of students. Champagne dreams and Derm wishes go out the window pretty quickly.
Good luck, and don’t cancel your interview. A bird in the hand is worth 2 in the bush, and you still may not even get an acceptance anyway.