You're missing the point though, other classes casting AOE are not speccing away from single target damage just for a tiny burst window, if the hands die in 2gcd's for us then it means they are very low health for the content level, which means that it's very easy to kill them off. Now a hunter taking Barrage is not gimping single target dps, but a Fury Warrior taking Bladestorm is.
You're gimping your single target throughout the entire fight, just so that your raid can avoid using casting 3 seconds worth of AOE on stuff that doesn't need to die that fast anyway. The proof is in the pudding though really, as the logs suggest that as a result of Bladestorming the Warrior dps to boss is very poor on this fight. If it was a really important mechanic that was key to the fight then Bladestorm would be invaluable here, but really the hands on HC are just fodder with no health.
Like I said I'm not against it and I even want a piece of the action for the good of fun! I just think it's funny that people say Warrior is so powerful here because of Bladestorm as if this is really meaningful damage from a progression point of view, when the hands are the least threatening and most undertuned part of the fight, and require you to forbid the raid from dpsing just so you can get your moneys worth.