I don't always like to contradict people, but I feel I need to here.
Yes - the clan rankings are
very messed up.
But it seems you haven't seen littlelosts members? I mean come on Giga. Aegis? Hello! One of the top players and spenders, in littlelostyourlost. James is an extremely intelligent player, but he's also not afraid to admit he spends a lot on this game. Just goes to show how much he enjoys it

Iv actually been in Reign (3 days lol) and HTK (5 weeks) and I can assure you that not everyone in those clans are pay to win.
It is true that some of them are heavy spenders, but how does that make them "not worthy" of being in a top clan? If anything it makes them more worthy because they support the games developers more than free to play people do.
Everyone in those top clans work very hard to stay in there, and they are
all worthy of the rewards. 400 wins per week isn't easy for a casual player.