I'm pretty sure the squish has to be used because they don't apply the same points for a Win v/s a Loss.
The question is Why don't they? IDK.
They have to Squish us, or, they change the actual Point Spread per Bracket since as we battle everyone's scores go up/down but the goal is to keep the same #'s inside each Ranking Bracket.
I've never been in support of the whole move in between battle crap.
To me you Start & End in the same bracket since you have the same opponents the whole time.
This promotion/relegation after 1 fight causes more issues than it solves.
It seems like they would get better results if they just kept everyone in the same bracket the entire time & changed the win/loss points to be the same amount going up/down & then after each GAC was over they did a minor set of adjustments at the edges of each bracket to get the %s right.