Excellent episode. What I took from the Greatjon scenes is that he is being shown as more calculating then in the books. He takes several long looks around the room during both scenes with Robb to seemingly gauge support. Only after finding that support seemingly lacking does he either capitulate or leave. As far as the counting thing goes, I recall a bit from Clausewitz where he discusses the ability to gauge the amount of enemy troops from a distance. It has something to do with finding the size of a given area, gauging how many men are in that area, and then comparing the given area to the entire enemy force. He also talks about learning how to look at a piece of land and being able to figure out how many men could fit in it. Maces and hammers were not less well balanced then a sword - just balanced differently because they were totally different weapons made for different purposes and wielded totally differently. In real life the sword was the least versatile, usually only effective against enemies not wearing armor. Axes, maces, pole axes and spears were the primary arms of the Middle Ages - swords were basically side arms in combat between knights. The sword was the equivalent of a .45, the pole axe, mace or lance (big spear) were the assault rife.