Dunno what it is with you muricans and using short weapons on battle. Short weapons and strength builds even. Makes no sense whatsoever. I would love to use a Danish in a server with a lot of 2h being longsworders. Length is king on battle, but perhaps you have less ganking or group versus group action or something.
Its REALLY easy to hiltslash spam shielders with a longsword, and its far better to use sideswings when in a tight situation surrounded by enemies. Generally longsword play feels much smoother, a little more difficult, and faster paced than using a greatsword. Usually easier to get up close and finish off enemies with overheads and stuff in ganks with them too.
I teeter betwen German GS/GS and Longsword in my play, and got much more used to LS than before from being 2hand cav. Its a great weapon, but I don't think its OP. Top tier 1handers and majority of polearms all outreach it for example.
Unless you enjoy backpedaling everyone, the LS is a much better duelist/solo hero weapon. Probably why most 2handers on NA seem to use them, we are all solo-hero douchebags who ignore teammates and go ganking people from flanks alone. The STR builds in heavy armor all use greatswords and mauls and shit, just the balanced/medium armor players prefer LS.
Greatswords are far superior in any other situation though, and using one is basically begging to do nothing but lolstab abuse for killsteals. So I'm glad they aren't too popular in NA.
Also, the Two-Handed sword is garbage. I used a MW one for a while and while its fun to use, the stab is so pathetic its not even worth using. The Miadao has 4 more cut on swings and 5 more reach with the same nice fast speed. Now that's a weapon that is fucking OP.