"I feel a beserker or other heavy hitter would be better main.. simply helps keep argo. I agree with guardians should be back up tank.. for all that normaly aplies of saving mages, taking add ons.. and their abilities can help main take less dmg even if nothing goes wrong."
No.. no .. no.
Guardians get more combat arts for protecting the group then berserkers ever can. Making Guardians better tanks. And as for the damage, guardians can equip 2handers as well. Sure we don't get fury or anything like that. But for defense (which is what a tank is suppose to have) guardians take the cake.