I think what's more interesting is to check whether people applying to MIT are restricting themselves by applying in Round 1. I know for a fact from a current student that round one in 2015 saw a record number of applications when I applied last year. I was a re-applicant this time, I chose to go for Round 1 and I am assuming that I am ding already in India (I did get M7 invites so I think I have a decent enough app overall). If the round one is really the busiest round, then it could very well be that people applying in Round 2 are up for a lot less competition. That being said, its very hard to check this.