At 1 point I thought Brad would be the most hard hitting since he has more Passive damage increasing buffs in his skill tree, plus he gets bonuses with beating the 4 fighters, also he has self casting damage buffs and 3-4 hit skills. Even though some would argue that Elly would be top tier damage dealer cause she has the 5 hit skill and AP bullet Item to increast her damage further; she does miss a lot since she is encumbered by 'Tipsy'. Unlike Elly, who can't wear items like Thorin(helm),Zanwas(helm), Spartan(shoes), and Belt of pain, Brad has access to more OP gears(specially the item you get from the challenge battle with the nature managers). Even with all those advantages in passives Mirel still has the edge on raw damage stats vs Brad and she clearly deals more damage in my experience, idk why, but hey guess Sniper Mirel is just built different xD ; and having access to more elemental weapons and Airini(sniper exclusive armor) also give her a slight edge.