Standings of Black Mage, Red Mage, and Summoner

[Shiro--Tsubasa]

From what I can see, although I haven't played all three at 70 yet, is that they all fill a niche. (based on reading skill tooltips and watching some videos) One is focused at ST, one is an aoe king, while the other is like a mix of the two while not beating both of them in either it performs fairly well in both. I think that the reason why they seem so imbalanced so far is due to us only seeing one type of boss fight which is basically single enemy with very few if at all adds. Of course when fighting mostly ST the others will appear to be sub-par and the ST focused one will seem overpowered.