As a comparison, it's really useful to see a dressed stone like Lia Fail. The uniformity of texture is in total contrast to that at BCD.
There's definitely a big difference, but the intention may have been the same. Lia Fail isn't as even as you think when you look at it really closely. There's a lot more unevenness than you think.
Brings it all back to Cope's Ygdrasil theories with a vengeance!