Although I don't know a lot about FFXI I know what broken is.

Let's say a WAR can do 432 damage max every say, 10 seconds.
BLU MAGE can do 102 damage max, every 20 seconds.
Then say a BLK MAGE can do 231 damage max, ever 30 seconds. Warrior is clearly superior to all the rest, thus the game's classes are "broken".