User blog comment:ElishuaJansen/Favorite Character for the Forces of Evil/@comment-2138567-20110508153723/@comment-173.0.43.7-20110516205933

I agree, that makes no sense. When he became a wraith, he just became an extension of Sauron's will. In essence, a part of Sauron. Note that he was only a PART, thus not all of the evil of Sauron was in the Witch-King, therefore, he's not even as evil as Sauron, much less Morgoth.