"What about negotiating ability? Public speaking? Being able to evaluate extremely complex humanitarian, political & economic issues? Knowing when to compromise and when not to?"
You need to be intelligent and you need to be able to listen. I know you are prejudiced to disagree on account of this being Arnold but those qualities are a huge part of effective leadership. For example we allready know Cruz Bustamante does not have them - if you saw his "concession" speech it is obvious he learned nothing from this experience, his approach and manner was exactly as before. He admitted making no mistakes, blamed his defeat on outside factors, went right back to the tactics that lost him the race. Yet Cruz Bustamante is clearly the experienced politician you seem to yearn for. But he is not a leader.
