How are brackets decided (bug?)

[Aelthwyn]

Same question here.

Strange Guild Wars bracket movement

What you were expecting to happen, and what actually happened? This week Tigerclaw finished #7 in bracket 1 (772559 points), Match Masters finished #10 in bracket 1 (724469 points). As a result, Tigerclaw was moved down to bracket 2 (#15), Match Masters stayed in bracket 1 and moved up to #2. There might be something broken with the placement algorithm here, it feels strange that a worse performing guild moves up in ranks while a better performing guild is demoted.