Warriors in this game are about damage mitigation and control. Not damage output. With the man-at-arms tree you can get a MASSIVE boost to resistances that are available at all times.... and are dependent on your man-at-arms. One thing to keep in mind is that you can buy (I believe) Man-at-arms improving items... like +1 Man-at-arms.
That +1 man at arms gets you bonus hitpoints, +10% resistance, and bonus armor if you take the right talents.
I have all that stuff, and the point I am making is that I will still take tons of damage that a mage could just avoid through shields, crowd-control, range, mobility spells, and summoned minions (which ACTUALLY have agro generation, unlike your melee character).
It's not that a melee character can't do anything, it's that anything a melee character COULD do, a mage could do better.
