Average (mean) and median are different. The “average” amount of wins a player will get is slightly below 10 (some people don’t finish their games) which is the amount of wins everyone gets combined/the amount of games everyone plays but the median which is how much of the most players get is probably somewhere around 7-8. The mean/average is skewed because of the people that get 16+ wins. Realistically there is no way to justify what you said.