Galethorn said:A hand-and-a-half or light two-handed sword should balance in the same range, but are best served with a closer point of balance.
Very well said, Galethorn!
My trusty hand-and-a-half sword has ist point of balance three fingers wide in front of the crossguard, as most period german swords from around the 3rd crusade did. And thats the point where it has to be when using it in a swordfight - at least according to my experience from some years of heavy use in medieval reenactment.
The point why every type of sword or more general every type of melee weapon has a different rule for its point of balane is easy to think of: it has its own style of fighting!