Registered: Jun 2016
Location: The Throne of the Sheevites
That isn't mental domination. All the passage describes is Kaan being extremely charismatic. I mean, even some people in real life could sway millions to their side with only words and promises (Adolf Hitler, Winston Churchill), just like Kaan is now promising them victory via the thought bomb. It's a simple concept, really.
Kaan used mental control to force the Brotherhood into doing what he said, despite that he claimed to be no more equal than any of them. The "charisma" is what his control looks like to it's victims. If you'd read the book you'd know that. Like I said, he clearly uses that on Githany after she surprises him in his tent (when he wasn't using it she's stunned at how bad he looks then when he starts using it she suddenly flips to worshiping him) and the passage I posted directly links to that moment. He also attempts it on Bane, but he resists it. And during the Force Storm ritual he influences the minds of the participants into breaking the ritual.
Registered: Jun 2016
Location: The Throne of the Sheevites
Just because he attempted to dominate Bane doesn't mean he dominated the entire Brotherhood. And just because he forced their minds out of the ritual, again, doesn't mean he has the ability to dominate them. Minor influence is the most he could do to them as a collective.