It looks like the sculptor was in a rush and forgot about adding details to these minis.The only thing that in my opinion doesn't look bad are the shields. And bigger they are, but also clumsy and misshapen. I would imagine them as bigger and more powerful than normal orcs. I was very disappointed when I saw them for the first time on the Advance orders list and now I dislike them even more.
Right now I'm going to work on 12 Black Guard of Barad Dur.