Barely anyone uses Two-handed sword, here's why:
Longsword
speed rating: 98
weapon length: 106
thrust damage: 23 pierce
swing damage: 36 cut
Two Handed Sword
speed rating: 95 (-3)
weapon length: 110 (+4)
thrust damage: 22 pierce
swing damage: 38 cut
Great Sword
speed rating: 93 (-2)
weapon length: 120 (+10)
thrust damage: 26 pierce
swing damage: 37 cut
In short there's some heavy stats inconsistency of elements in this sword line as two-handed sword is too slow considering that it has just barely more reach than the longsword and it cant be used on horseback.
Ad option #2. Greatsword 120 minus longsword 106=14 /2 comes down to 7, and that means it should have 113 range, but I'd vote for 114 as it cant be used on horseback.