No, here I shall explain, so, all clans have entered have started at the same rank, giving everyone a fair chance for battles. Now the first few weeks I assume are randomly generated battles therefore we get an idea of tiers of the clans. So after 2 weeks lets say there are 3 tiers, (making this up)
1. Forgotten 2-0
2. Rebels 1-1
3. Trivium 0-2
Now let's say in week 3, you have to choose your battle, Trivium would have to challenge Rebels and Rebels would have to challenge Forgotten, both clans have to accept it no mater what, and after a few weeks more ranks of clans will appear and it will all play itself out.