Ninja, way better than every other class.

[Warlyx]

Mutilate is maintained off-rotation, it's pretty easy to maintain it, just like Phleb on Dragoon. Not realyl worth mentioning as far as rotations go.
The other DoT, Shadow Fang, is the first of two branching pathes from the main skillchain.
The debuff, as you mentioned, only applies when a warrior isn't present. Which is mostly in 4man content.

Not really seeing how what you said debunked much <_< It's still a 1-2-3 rotation with two one-button branchoffs, compared to WAR who has a 1-2-3 rotation with two two-button branchoffs. Also a good war has Fracture if he's in the OT roll, so he's basically got as much to manage as a ninja does. =p

not trying to debunk anything