Tank jobs also suffer from a similar problem. Both PLD and RUN frequently use spells to generate enmity and to mitigate damage, but fast cast gear rarely also has damage taken - or high hp / defense values. When I used to play PLD I would very frequently get killed while in my fast cast set by moves that would barely scratch me in my defense gear. This was one of the main reasons I quit playing PLD.

It would be nice if there was fast cast gear for tanks that was still defensive enough to keep them alive. It might encourage more people to play the role.