they say it is "fair play", However they like to match you up with people who have achieved higher trophy levels and higher tower levels. example, a person who's highest trophy level of 5700 often finds themselves competing against people who's highest trophy level is 600 to 1000 + trophies higher than theirs if you are winning too much. another way the cheat you out of "fair play" is matching you with opponents who's deck perfectly counters your deck, often multiple matches in a row.