Fanon Talk:Division by Zero/@comment-30785170-20170110135849/@comment-4013655-20170114063814

Every Verse has its own rules depending on how the author set them. If a cross over is wrote, one has to be aware of the rules of both (or for a smaller scale, different universes or realms within the same Verse).
Suppose the battle took place in a unverse where water attacks is stronger than fire. The evil doer has water attacks but the good guys have fire attacks. Then there is no way for the good guys to win unless the rules are circumverted somehow. One way to do so is to make water and fire one and the same. Thus you can as well said that both sides are fire users or water users, hence undoing the advantage of the evil doer in this battle space for example.