IIRC, Ogres aren't stubborn. They need this. and probably and extra pip of leadership as well. A points reduction across the board, and then some form of magic defense is in order (something along the lines of the Lizardmen Becalming Cogitation, or alternatively the ability to knick PD a la dwarfs/high elves). An improvement to bull charge wouldn't go astray, or alternatively simply drop bull charge in favour of points reduction.
"Knowledge is knowing tomato is a fruit. Wisdom is not putting it in fruit salad."
Also known as BaselessElm