Just kite lil bro. Get some better gear. A warrior shouldn’t get kill you in the open world as an arcane mage unless he is full geared and manages to delete you before your reflexes kick in. A good arcane mage will run circles around a warrior in the open world.
If you’re getting bladestormed to death that means you probably already messed up / were jumped.
Of all the things you should be complaining about in wpvp - mm hunters, ret palas, healers, your choice is one of two or three classes in the game that can still be kited and can’t kill you from 40 yards away