May I state that defenders are meant to DEFEND against you taking damage

Empathy defenders may heal, but in my opinion, Fortitude and the 2 RA's with AB is what makes an Empathy Defender, I mean seriously, ever heard of a lvl 40 defender without both RA's?
I would also state that since controllers Secondarys are those of the Defender, Isn't it Helpful to have a Troller that can Keep the Enemy from even Hitting you? If they fail they can use there secondary set to either defend (bubbles) or Heal or whatever they do to keep the Team alive
Moral of the Strory...
Defenders =Defense+dmg
Controllers =crowd control+fixing mistakes