Originally Posted by
Shardik
It depends, in 1.0 if you were geared right, Thm could out dps black mage, but black mage was better at aoe. In class mode you can borrow a set amount of skills from any of the other classes in the game, but when you put your job on, it limits that in half from a set of 2, for instance bard can all use a couple skills from Conjurer and Thm. The general rule was "class for soloing, job for parties".
Not really sure why you'd want to go jobless, since the jobs are way cooler then the classes imo.