That means it should take in a consideration of a combination of the two.
Does not mean their current of using one over the other good.

IMO, first they should compile a list of stuff that unlocks that could give a player advantage in a fight that does NOT do so as a contribution of power (so 8 gate, 2nd summon etc doesn't count, as those contribute in the form of power). This is probably mostly just lv 50 for summon(maybe 53 for ez access to more useful one) and various talent tiers.
And they would take the player's power and deduct from it some amount to account for the missing "perks".
And then sort players according to the modified power.