obito once said that he's not in league of madara...his main objectiv is 2 cast tsukiyomi...madara replied saying that you hav quite grown to hav such attitude...it shows that obito isn't afraid of madara @ all... he may know some hidden secrets something which madara doesn't know that obito knows...as 4 kakashi..alon its nt possible unless he acquires the other eye of obito...