It is tougher to deal with these players when there are many of them. The best analogy that I've heard is to old western gunfights. If one gunfighter is vastly superior to the other he will defeat him easily. But imagine that John Wayne had to square off against 5 or 6 retarded gun fighters simultaneously. He is much better than each one individually but when they are all together it is inevitable that one of them will shoot him by accident before he can kill all of them. If there are many retards playing against you it becomes much more likely that one of them will draw out on you unless you have the stone nuts. I think you will still win in the long run playing smart poker, but your volatility is increased. It is harder to kill fish when they are in a school.