87 that is a good question, for which there is no easy answer. I have been coaching sports at the HS level for a while now and I still don't know. Some years (or games for that matter) teams come out with a certain character and personality that says "we are going to get this done, one way or another" and they do. Other teams just don't and it has little to do with physical ability. Some kids play too tight. Some kids can't focus through the emotional distractions of competition. Obviously greater talent is a cure for a lot of problems, but the list of really talented teams that accomplish nothing is pretty long (at all levels). I have tried to the best of my ability to teach the kids the nuances of the game and put them in position to perform and win. Despite my efforts and the talent level of the kids I have worked with, the results are all over the place. Generally speaking, good coaching, good schemes, and good players tend to win, but they don't always click like you may think.
In others words your saying it's not just a matter of mathematics, such as, recruit stars, money, curriculum, etc. Are you saying it has mostly to do with the character of the kid?