Interesting link.
The part where I would disagree with his analysis is the statistical tabulation of World-class vs Strong. The challenge is this is a highly subjective demarcation. In my experience/judgement the World-class percentage of any of the classes is much smaller. I would say closer to 10% of the class rather than 50% of the class. I would agree for that pool admission rate is 90+%.
The strong pool is where all the struggles are. Given that there are all kinds of strong students with perfect A's etc who have not invented the next great thing yet. This is where the struggle is.
Also note this statistics leaves out all the special interest groups: Alumni etc.
