The thing with Adam's sculpts, as I've gone on about ad nauseum, as well as almost all other custom sculpts is that they live and die by the paint work. The melty Joker up there looks damn near flawless because the painter managed to give it some texture and make it look like a person. small_studios (I think) paint job that I originally posted is very soft, and it looks like a toy. The shading and detail work is great, it's just that it looks, well...like a painted toy.
Out of all the customizers on here, Adam does hands down the best work, as aside from his sculpts, his paint work is almost flawless. Anytime anyone else touches his work, it almost inevitably looks worse. There are a few exceptions here and there, but they're very few in number. I had to do some paint work on the Ledger sculpt of his that I have, but that was just personal preferences...when I first got it, the paint work was mind-blowing.
Custom sculpts turn out nicely much more often than custom paint work does. Custom paint work often just kills them.