Considering dragons and dragon armor are new I think they should be the best. You need a maxed out smithing skill to make dragon armor and also kill dragons for the resources. It should be better.
No it should just be easier to build dragon. And I don't know about you, but dragon bones are in infinite supply in this game. Deadra hearts on the other hand cost roughly 1k gold a piece if you can find one of the two merchants who sell it(1 at a time).... not counting the ebony. Now look at dragon armor... it is pieces of dragon bones and scales attached together with leather and steel. Doesn't look that hard to work with compared to any of the other materials.
Now think about the process for building deadric. You have to bind deadra souls into ebony as you are forging it, and it magically changes in the process. The fact that your weapon doesn't come alive and eat your hand in the process in a miracle. Personally I think the atronach forge should be the only way to make deadric, I don't think a common forge should be able to..