I use light attack + 5 damage skills. 3 of these skills are with magic damage therefore I still use War Maiden cause it brings me more DPS than Julianos. Of course if most your damage skills are without magic damage so prefer to use Julianos.I'm sorry, but there's a lot of bad info in this thread.
War Maiden will always be weaker than Julianos unless you can get at least 75 percent of your damage to come from Magic Damage. This is basically impossible to get on any magicka DPS.
P.S. I already did campare Necropotence set with another magic damage sets and will start a new thread on forum with my results. But with other magic damage sets including Necropotence my DPS still about 28k.
P.S. Its impossible to save high DPS in solo playing cause you need to run, block mobs attacks so in this case DPS is not so important that to stay alive, dont die under mobs attacks and damage mobs.