Because
Glacier Rot now reads: Diseased enemies take 7/13/20% more damage from your Icy Touch, Howling Blast, and Frost Strike. When one of your diseases are dispelled, you gain 10 Runic Power.
Hungering Cold changed: No longer breaks instantly on any effect outside of disease. Breaks similarly to Fear.
Sacred cleansing (talent) now reads: Your Cleanse ability now has a 10/20/30% chance to dispel 2 Magic effects instead of 1.
It used to lose to warpal a lot but with these changes its pretty hard

