Don't forget, you don't bleed if you get hit with Magic. It's particularly useful to keep a balance between Warriors and Mages, it's kind of needed to be a successful tank.
Honestly when the game throws enemies in greater numbers than yours, shooting CCs left and right and Warriors have such long cooldowns and spend their time in the frontlines, they need this. It's the only thing that makes getting a warrior worth it.
Meh,
I normally run 3 mages + madora as a 2h user, she has 100% resists to all elements, I just rain destruction down right on top of her, my summons and any enemies in the area. The only thing that can kill her is melee and leech + comeback make that effectively impossible.