I've just got to step in and say that was uncalled for. I thought it was helpful information and a message to all those waiting out there not to take an admissions decision as a judgment of personal character.
You missed the point. I may have been harsh, however the message is the same. No need for him/her to get all worked up about how perfect they are and how a school selected a substandard candidate compared to them. And that even during follow-up they claimed the dean said they did everything perfectly, yet they manage to accept the non-perfect candidate and opt to waitlist OP.
There are a few options on why OP would be adamant that their app is objectively and subjectively better to the ADCOM compared to their friends compared on all possible rubrics and would result in friend being accepted and OP being waitlisted:
1. Op's app is not as good as they claim.
2. Op was not a good fit for the school.
3. OP's friend despite being painfully shy interviewed better than op.
4. OP does not listen to criticism or does not think their app needs work.
5. OP ignores all signs pointing to an issue and decide to blame the process.
6. OP thinks that the years of experience and objective metrics that adcoms use to grade applicants and interviewee's is flawed.
7. OP expects the adcom to be honest rather than polite in a professional setting.
The above leads to the conclusion that OP is lacking in insight or OP is arrogant which is indicative of inexperience or never having faced adversity. My advice was to chalk it off to randomness and move on to the next opportunity because obsessing over it and claiming that there is no way the other person outperformed OP on any metric is problematic.
Now all of this is my opinion you can take it or leave it. OP was just coming accross that way in multiple consecutive posts. OP may be neither.
I have met people like I have described in real life, people who have no idea that they too are human and can make mistakes, can rub people the wrong way, can have an off day or are not special snowflakes and are rather are pretty average. One can continue to live that way and just see the evidence chalk up that they are not all that they claim that they are, or one can take an introspective look at themselves and grow.