[quote][b]Posted by:[/b] Mutoid Log Simple. The boosters quits out of a lot of games, and this causes his team to lose most of them. By losing a lot of games, his mu and sigma become very low, which means that the system is certain that he is terrible. Now when a new account "carries" him to victory every time, the system thinks that the new player must be very high skilled, and thus raises his mu and drops his sigma quickly, making him reach a high level very fast.[/quote]How does playing unpredictably (losing a most of your games) lower your sigma? The system is arranging matches with a high probability of draw and if almost all of those matches result in the player losing, the system is less confident the player is ranked appropriately. The problem is, a player who is a legit 10 (low mu & sigma) playing with a new account will not have the same effect as a person who was higher and quit a ton of games to get down to a 10. The legit 10 and a new account will not get to 50 in 25-30 wins. You are saying these 2 accounts are virtually the same as far as the system is concerned with a low mu and sigma. They simply cannot be and by looking at the equations the only reason can be because of a few factors - sigma & match quality.