5. When used 1H the spear is less controllable than the sword. For example, lets say the spear is 6’ long. For every foot beyond 3 you have on the fore end (the end with the spear tip on it), it becomes less-balanced, ie 3 fore and 3 rear is balanced, but 5 fore and 1 rear is not. But 3 fore is only about the same length as an average sword. And generally it can only thrust whereas most swords can but as well, so the variety of possibe attacks is far less. It can be easily batted aside, and, unlike hhe sword, the wrist can’t easily control it. It also can’t be used to parry incoming blows as easily, you can’t strike with the pommel etc and...you get the idea.