This is more lore than fact. This kind of thing spreads on the internet when someone with high stats cannot believe they got rejected from what they perceive as a "lower tier" school. They cannot fathom that their 3.7/37 didn't wow a school with an average of 3.6/32. But in fact, as mentioned above, it's all about "good fit". Lots of people with high stats aren't a good fit, even on paper. Others, through their essays or when they go to interviews, act arrogant and like they are doing schools a favor by interviewing there, assume they are a shoo-in, or otherwise don't take it seriously, and guess what, they don't get in. And so that's how these rumors start. People in this process are quick to deflect blame -- they cannot imagine it has anything to do with them and so they are quick to believe and report that they are too good for the schools, or that the process is so random, or one of the other handful of myths. In fact, in most cases there were reasons the school decided these applicants weren't a good fit wholly apart from the numbers. That's why you need to apply widely and broadly -- not every school is going to agree with your view of what's a good fit.