Daedric or Dragon items aren't even that great to begin with. They weight more than things you'd normally find, and their bonuses are negligable. An iron sword can compete with a Daedric sword if Smithing is involved.
How do you figure? The base damage for a dragonbone sword is twice that for an iron sword.
I agree with Commandant Oreo.
Skyforge Steel Sword weighs 10 and has 11 damage
Daedric Sword weighs 16 and does 14 damage.
Smithing Improvement applied in the usual manner (smithing/enchanting/alchemy) adds 46 points of damage.
Skyforge Steel Sword has 57 damage
Daedric Sword has 60 damage. 5% more damage.
Is 5% damage difference worth 6 extra pounds of carrying weight? I'm sure many will say yes. But there are many who would say no. I would be one to say no. I have always preferred Skyforge Steel over Daedric. Well, not always. I had one character that went full Daedric.
Or maybe the question can be phrased slightly differently. Is 5% damage difference worth 4 perks, 30 pounds of extra weight, and looking like a silly dremora?