IMO, if the mage doesn't kill the fighter before he/she gets to him/her, then that mage is dead.
It would help to kite, but if the mage is stunned then it's pretty much game over due to the fighters' large amount of skills and especially stun.
Hey, btw, what about the mage fear skill? And Mana Burn? I don't think mages are as easy to kill as some people make it out to be. To me, they seem like the PvP King of Fiesta. Mana Burn isn't meant to be used anywhere but in PvP. The Fear skill with I think 20 second stun or something should be very effective. ;O
EDIT //
As with Ethelinde, I agree that she's right with archers. We're meant to take down a SINGLE enemy, not multiple enemies. With our DoTs we can drain away HP and attack from a distance. All we need is an entangle skill .______.