I would agree that RTW and MTW have virtually the same AI. That is what lets RTW down so badly. The AI simply doesn't work with the new strategic aspects of RTW, while it was sufficient for the MTW Risk-style map. At least MTW saw massed armies not sad little stacks. At least the Risk-board meant that generals fought with their armies not by themselves. Certain flaws in the tactical AI keep reappearing in each release (suicidal generals, marching aimlessly around under a rain of arrows etc) even when some of them have previously been addressed in patches.