Board Thread:Questions and Answers/@comment-30938718-20171120163153/@comment-26921673-20180406160848

Overlord is stronger than Nadakahn. As I said before, we don't know the extent of the Overlord's powers whilst we know the extent of Nadakhan's.

It seems Nadakhan only had the power to grant himself simple wishes, and not things like being the most powerful being in the realms. If he could do that, he would've, but he didn't.