Well, if compare to mara - mara needs to build his rage, assasin regen while kiting aoe.
black out is good for force regen, and can be reseted. (force regen is not a big issue any way, you can't derp spam voltanic/trash all the time, but don't need to much filler saber)
force speed is not as good to get to boss, ofc, but it's much better to get away from him if needed.
force cloak is better then maras derp stealth.
madness does good dmg while kiting and has more range for dots then mara anni.
comparing assa to merc is just wrong.
I was more or less comparing carnage to deception since the spec play in a similar style - otherwise, im comparing STAT talents that every class gets that we do not