Do the math for a GS Lit II Falchon. Then do the same math for a Frost Burst Holy Falchon of PG. You might be surprised how little overpowered those GS weapons are compared to what everyone else can get.
Now try a ML2 (or is that ML4?) Frost Burst of pure good and see how overpowered that is.
There are bigger imbalances in the game.