As in, they have a stabbing point. A sharp tip, meant to pierce and stab. They aren’t weapon who’s sole use and purpose is to slash. Slashing attacks are great against unarmored opponents, as they are in game.
Frisian hero Pier Gerlofs Donia is reputed to have wielded a Zweihänder with such skill, strength and efficiency that he managed to behead several people with it in a single blow. The Zweihänder ascribed to him is, as of 2008, on display in the Fries Museum. It has a length of 213 cm (84 in) and a mass/weight of about 6.6 kg (15 lb).
Yet unlike in reality, you seem to have forgotten that swords were also meant to fight enemies in armor, and that their sharp point was developed specifically for this purpose. It’s especially confusing that you haven’t integrated a single armor-piercing stab attack in the move-set of either Kruber or Salts two handers when you did give one to Kerillian.
And considering how little use the above weapons see specifically because of the preponderance of armored enemies and their lack of armor piercing ability, I humbly suggest that you give both of these weapons a stab, either as part of a combo move, as a heavy attack, or even better, as a Push-Counter.
If you want to be especially cheeky, you could be one of the very first video games to include use of a greatsword murder-blow, which was another very common technique for use against armored opponents. This would be especially fitting as a Push-Counter.
Thank you for your consideration.