I'd argue recognizing one's shortcomings and addressing them is the opposite of ineptitude, and it's something more of the evil overlords should learn. Same applies to "evil Rowan".
Rowan was incapable of killing even Jezera despite getting a perfect drop on her, i don't think he's able to do much harm to Andras. Even if you pass the (very high) combat check in the "Andras loses his temper" event, Rowan only manages to reduce damage Andras inflicts on him, and Andras isn't actually trying to kill him. As for Jezera, i think she treats Rowan like a pet because it amuses her, not because she is seriously concerned.
Also, orcs don't fear Rowan -- there's multiple instances where orcs attack Rowan without any fear, and he definitely had to work hard to prove himself worthy of even attention, much less fear, in the orc camp.