To have confidence based on your own self, and not just the results. That goes beyond what most people is able to do, I don't think it's just brats who have that kind of problem.
Now, what culture have that way of thinking? We belittle each other in pursuit of competition in the first place, it should be obvious that that is counterproductive.
The obvious is the least of the concerns of the people. 10/10 manga Murakoshi had to give up the armband at this point.