in my opinion, the 700 GMATers are indeed the minority. according to statistics, every year in china, about 3,000 people sit the exam, only 10% or less got the 700 or above, that is to say about 200-300 people got that score. people in majority get 600 more or less. that is true.
so if you want to be NN, you must spend a lot of time and energy to prepare for the exam. coz gmat is not simple. really.