"I'm assuming..one is using textures another is procedural and I don't know what the third is."

Each SkinVue set-up is exactly the same. All I did was change the atmosphere and re-render.

You will notice that the wet - oily look of the skin disappeared when the lighting became more ambient - indirect.
What this means is that you will need to tweak the SkinVue settings according to your lighting conditions until you get the effect you want. Which is easy to do.