I think we read it differently since OP never uses the phrase ‘nerf the build’. If anything I believe, and OP and correct me, the point is the build should have never been created, it should have instead been given to Druid class all together.
Think about the mechanics they have done for S4. Shouts are now shared by Druids and Barbarians. Why are all of the twister aspects not Druid aspects when Druid uses their ‘shouts’? Why is there not a druid aspect that creates more tornado each time Druid uses 100 Spirit?
There is nothing wrong with WW being a strong AOE skill. Just make it a different flavor. Why couldn’t it have read throws steel chains out instead? This would be in line with the melee flavor and existing class mechanics and animations. It did not need to be tornadoes. This is why I gave the earlire analogy of Sorceres spawning skeletons and golems.
Even if the damage were the exact same, when one class starts using another classes mechanics the game loses a lot in aesthetics and fantasy design.