It is not better than phoenix ult which is 6 orbs. I think making iso ult 6 orbs will encourage more gunfights taken by iso, what do you guys think?
It basically is 6 orbs, you are guaranteed an orb from the ult as both killing your opponent and dying to him grant an orb. Missing the ult is the only way that you could not gain an orb from it, so I would be fine with the ult being 6 orbs assuming you don't get an orb while inside the ult to soften the impact of missing the ult.