Why does Harvard defer so many applicants?

@ibanker38 The poster here says the way I described is how Harvard calculates.

http://talk.collegeconfidential.com/harvard-university/1948686-harvard-class-of-2021-rd-thread-p20.html

If this indeed is the way Harvard calculates its acceptance rate, it’s sort of a sleight of hand to make it seem their acceptance rate is lower than it really.