Just checking around and another thread I follow is also showing some wonky changes (Gems of Thrones) and they have confirmation from Mobile / PC player also doing large unexpected jumps - check the thread here for info Climbing up Guild Wars brackets - Case example: Gems of Thr0nes (PS4) - #74 by StanLevitan
If they’ve changed it to reflect “points” in your bracket or something to that effect perhaps that is why as we scored over 1.4 in the bracket last GW but you’d think the dev’s would have announced a change like this prior to just introducing it in this manner 