If you're talking super vs super in pvp, fireborn is one of the worst set up to use except in ToO, and even then, any other super kills the self-resing warlock easily. I'd rather have a battlefield of bubbles stacked on top of each other or Gunslingers blasting away from a distance. If using sunsinger, at least use radiant skin, then you can survive a GG shot or beat a bladedancer in a fist fight. Strikers will still win, but you may be able to beat a Defender even if they use Armor of light.