Realism? FTW... 2H king of all classes and no one should be able to kill them? Cav would not be able to kill them if the attack angle gets any smaller because 2H stab will always kill the horse, when approaching directly from the front (yes 2h weapons outreach heavy lance in that situation). Archers could not be able to kill 2h because they would be nerfd to hell. Throwers run out of their shit fast and only thing that could stop 2h monsters is xbow? Hellyeah!
This came to my mind