Yes. If you do it any other way, the first set of balls die in milliseconds, and the others linger for 4-7 seconds.
This whole argument that fury shouldn't aoe the adds is a bit silly. Why aren't other classes "Stealing" raid dps when they do it? When it comes to sheer
burst AoE, there isn't an ability in the game that is equal or better than bladestorm. (Maybe other than a monk tank) This whole notion that fury shouldn't do what fury does best is a bit silly, and makes us seem like second class citizens. The faster ball lightning die, the faster everyone can swap back to Lei Shen.
Bladestorm isn't a single target dps loss, I don't know when it was removed from the default action list on simcraft, but I just added it back.
(all are single target)
http://gyazo.com/1ed4cac91014973eb26a4691ac855e44
dragon roar - 206.6k
http://gyazo.com/0f7d8c78eec57d6c9bed7d678955f984
Bladestorm - 201.8k
http://gyazo.com/5fc4f7c37b9c86d6c3872c6b8418ca15
No use of dragon roar or bladestorm. - 199.7k
With a 60 second cooldown, it'll be even closer to dragon roar.
http://gyazo.com/aeeacba8fc74c4489e1b4eb2150f4a8a
203.1k dps