All Jobs are overpowered in many aspects of their Gameplay, simply by the way they themselves and avaiable Content such as Dungeons, Raids and so on, are designed.

And to make matters worse, they all have been made too similar from one another since Stormblood and it only gets worse with every Expansion. The only reason for "why" i can come up with, is that the Dev Team, dont WANT to spent much time with this kind of thing, and moreso with Sidecontent that does not involve Combat at all.