bernice AW is arguable because her cost+ and block+ might be hard to manage, especially for people who aren't used to it. also, I wouldn't say fedora's -1 cost AW is poor. but that's me.
also, I'd say one of the greatest reasons for spica AW taking high priority is her damage being able to reach up to 800+ (with self ability, prince buff and skill up) which is necessary to make crystal keeper X easy mode. that said, w/o priest healers it's probably still fairly tough.