Every class had its nemesis.
Among them, the Esper class was the most unique—they could sometimes be the nemeses of the other four classes, but the other classes might also sometimes be their nemeses. This was all because of the randomness of Esper abilities.
In the five Super classes, Espers' pros were just as clear as their cons. Their combat capability was almost solely dependent on their different Esper abilities. Also, their class knowledge tree was very straightforward, such as enhancing Esper ability's strength, range, accuracy, and so on.
Espers could shine brightly in one aspect and lack in others; all their abilities had their limitations.
For example, teleportation lacked defense, high speed recovery lacked the ability to deal damage, and prophecy… well, no need to rub salt in the wound.