User blog comment:Weew1213/Dementor vs Ringwraith "Soul Sucking Demons" (Season 1 Finale and Halloween Special)/@comment-4708902-20151019140535

The Nazgul has this in the bag. They lack souls and positive emotions. so the Dementor can't feast on anything. The Dementor may be able to fly but in order to win he'll hve to get up close. Ultimatly what will likely happen is that they'll both be going at it evenly, but the since the dementor will have nothing to feast on, he'll possibly starve to death or grow weaker from lack of nourishment.