BLU Ultimates

[Powercow]

Blue mage allows freedom you can make your own build you can be a dot mage, a ogcd spam mage or a slowcast mage.

So which one of those does the most damage, and which two are wrong? Or are they all the exact same potency and therefore balanced enough to be able to be brought into the fold as-is?

You can do a melee red mage or an ice/lightning black mage, you can do a freestyle monk or a songless bard, you can be a Cure 1 white mage or a physical-only paladin, heck you can play any of the jobs in this game wrong. Why does BLU need to be kept safe from possibly making a mistake?