There's a use for everything. How is a mage on Giant Faction supposed to get a Prestidigitator's Headband? Compare this to the Kael quest Summoner's Circlet and that's different: AC 8, 10 Int, 7 vsMag, 5 vsDis, 25 HP/Mana.
I think then, I'd take this Crown over the Circlet. Int is SOOO easy to come by, the 3 Int difference has no bearing. The Crown has a couple more ac and better saves.
It'd be a hard decision though between the Pres headband and this crown. It would all depend on what I wanted most. AC and Fire/Cold resist or a hair more HP/Mana and more varied resists. Each one has the same total amount of resists but the Headband spreads them out more.