The problem is that while a shorter weapon does have advantages in a close-quarters fight, options a RL spear-fighter would have against the shorter swords or axes are nonexistent in the game. IE, the sweeping strikes over the shield to tag the back, smacking your opponent with the butt-end of the spear, shortening up the grip by couching, etc, as shown in the video I linked. Additionally, in real fighting you have three types of moving: Stepping, Springing/Lunging, and Leaping. In M&B and Warband, the latter two, which are very, VERY important for distance management, are missing, meaning you need an absurdly high athletics to be able to manage distance properly (trust me, being able to move 2-3 normal paces to the side on one lunge makes a HUGE difference over having to make each of those 2-3 steps individually).