I'm using the two-handed variant of InsanitySorrow's beautiful version of Dragonbane and noticed that the damage seemed very low. Checking in TES5Edit, it seems it should have about the same damage rate as a Glass Greatsword as the one-handed vanilla version has the same damage rate as a Glass Sword, so I changed the Damage to 21 and the CRDT Damage to 10. I've also smithed it up to Epic. Even so, it does about http://i.imgur.com/4kjb5tQ.jpg (that is, the 2H version in USKP - 42 compared to 74). What am I missing here?

dragonbane is a leveled item.

Did you loot your dragonbane while your player was low level?

No, she's level 30, but that shouldn't matter regarding InsaneSorrow's 2H-version, which I added via the console and only comes in one version.