Its seriously the no1 dps. Yes DoV does not give you %150 (wow very balanced) attack anymore but they are forgetting the fact that all the skills which had a %100 scaling each hit before now has a lot more scaling.
An example would be Zornhau which does %1029 damage at lvl 6 and with lvl 6 attribute thingy it does %4116 damage (4 hits) with no damage attribute on a 15sec cooldown. No other class can beat this. And you know you can amplify this damage with slash debuffs from barb/dopp, DoV and %50 damage attribute.
This is not even the best skill in the tree.
My friend does up to 2.2m damage with this skill. Practically one hitting all the saalus and mission bosses.
*** Note info here is wrong Zornhau cant pass 555k damage due to being fake multihit. But this does not change the fact that doppel is a monster.***