Everything Mietze said. Being a great leader does not mean you're a great RPer and vice versa.
Part of the OOC responsibility of taking on IC leadership is recognizing your limitations and wants out of a position and not taking it if you aren't able to meet its requirements.
Though it actually reminds me of a game when a great RPer took on a position of leadership just to be a terrible leader. It was actually pretty fun and awesome all around. They OOCly knew they were a terrible leader and inept as a ruler.. and ICly blissfully unaware of their incompetence. We had to scramble to fix the problems they created and worked to depose them for the good of the kingdom.