<p>The diagrams look interesting. But it does not prove that students with great stats will have the same chance as those with less stellar stats. I would guess that most of the students on the diagrams applied to the same selective colleges. If a good student was rejected by brown, he/she might be accepted by princeton. In my school, almost all of the students with great stats were rejected by some selective colleges but also accepted by some other selective colleges year after year. So the end of the day, they all went to selective colleges.</p>