I would have to say melee hit alot more because there moves come from TP generated from successful hits, as with mages they get MP to cast moves.

MP regens on potions, moves/effects, songs, and standing still and/or out of combat (as well as lil bit over time with thm - MP REGEN)
TP can be accumulated with successful hits, as well as invigorate, and now with a song as well. And diminishes when out of combat.

So missing melee hits would reduce the amount of TP gained, thus reducing overall damage, and desirability.

That being said I do however understand where you are coming from, Mages tend to resist, and/or miss more often then they should imo.