I know actual officer promotion boards typically get split up into three categories... the cream of the crop based on performance selects without much conversation, and the bottom tier doesn't really get talked about either. The "crunch" is what I've heard the middle tier described as, and this is made up of the relatively average guys. This tier is what takes the most time for deliberation, and factors beyond the objective metrics would come up at this point.
It would make sense if our board occurred similarly. If so, an 80 9/9/9 applicant wouldn't have much time at all spent looking at their references or personal statement. The same is probably true if you barely qualified. Those things would come into play when they've gotta make the tough calls