Where did it say that throwing matches wasn't allowed? An event where you get equal credit for wins/losses with the goal of a very large number of matches encourages throwing matches. The point is for you to spend ironite and therefore for many people that means spending cash. If the devs didnt want people to throw matches they would have said that. You can't punish someone for breaking a rule that doesn't exist. I understand the issue is that throwing a bunch of matches to a single player artificially inflates their ranking, but that's a problem with the code that could be easily fixed by limiting the amount of defensive points you can get from a single player, and that's an obvious problem that should have been anticipated.