Predicted Win % - Pythagorean Theorem

Bombers GM has looked at the predicted rankings based on the pythagorean theorem
Winning % = (Goals For)2
(Goals For)2 + (Goals Against)2
Results:
Simulator is fairly reflective of the formula with actual win% vs predicted win% having an R-squared of 0.6891. (Predicted win on x-axis, actual win y-axis).
Below are the teams (ranked by win% and predicted win%). Comforting to know that the Bombers are predicted to be 4th but is only currently unlucky at 8th spot...
Biggest overachiever - Thrashers, w/ a win percentage 0.151 higher than predicted, followed by Alpacas 0.126 higher.
Biggest underachiever - TrueGrit w/ a win percentage 0.076 lower than predicted, followed by Bombers 0.016 lower.
Win % calculated as 1.000 = 100%.