User blog comment:GSFB/Sauron vs Dominarian Wizard/@comment-6771148-20130507001751

Powers: Dominarian Wizard has better power set than the creator of the rings of power. Although Sauron commands vast armies, with some reasonably powerful warriors ( Trolls, Fel beast, Wraiths etc, Dominarians ability to summon supernatural warriors suchs as Angels, Demons, Elements, etc  would allow him to have a more army than Sauron. Also a major advantage that the Wizard has is his ability to cause  natural diasters, that could damage or eliminate whole armies. Also the creatures that the Dominarian can summon just seems more powerful than saurons warriors.

Weapons: Even. Sauron with the power of the rings, will be able to fight the wizard directly.

Overall: The Wizard wins due to having more powerful magics, and a stronger army.