Well, it's that, definitely! But there's many ways to be a complete jerk and many abusive orders you can give, and when you start giving the *same* abusive orders to the brother who's most like you, one starts wondering how much you're feeling the urge to relive the traumatic scenario from the perspective of the one who wasn't helpless in it. (I don't think it's solely that, but I do think there may have been an element of "coming to terms with what happened.")