I’ve just noticed that Vizunah Square and Jade Sea are linked, and I’m guessing that together they have quite a high population. They’re comfortably winning their matchup too by the looks of things.
The 3 servers currently in T1 are significantly above the others servers in rank, and so only get matched against each other it seems at the moment. In the past I think there have been manual changes to rank in order to get servers into the correct tiers
I just wondered if this manual rank change was something feasible, since T1 has had the same matchup for 3 or 4 weeks already, and is likely to continue to have this matchup for a further 2 or 3 weeks while other servers try to close the rank gap.