With what you wrote, doesn't the math work out to Power Blast individually being less than each Boxing and Kick even without the +fighting synergy?
You posted damage and recharge. Power Blast 59.28/8s = 7.41 which is less than Boxing 23.25/2.5s = 9.3
Math..
Some ArcanaTime DPA / DPS / attack chain numbers would likely be more relevant to your point.
While Boxing, Kick and Brawl may not be as relevant to this incarnation of the game. There was a time when they were useful.. but I digress.
I understand wanting M0R3! I just disagree that pool powers should exceed primary, secondary or epic powers.
There is a lot of nuance built into the game with implicit trade offs.