I'm slightly hesitant to say 'no, it doesn't have an edge-blend node or falloffshaders' as I think the real answer to that is 'it doesn't have anything directly comparable in the Basic or Advanced Daz Studio 3 pallettes, but I think both are possible if you know more about it than I do' :)

I know it can render both translucency and sub-surface scatter effects so I suspect it does have those shader capacities, but I'm afraid I'm not knowledgeable enough about that side of it to say for sure, sorry! 

I've just given it a shot with the suggestions of the infinite light (named a Distant Light in Daz) and it gives an an identical result to the screen grab above. Changing the Ambient value to pure white and dropping its strength to 2% seems to help remove some of the shadows, as does leaving Glossiness at 2% rather than zero, but it's pretty much the same.

Hope you can find an answer on the falloff :) And I agree, I've had several times when I've been very very thankful to kind folks with better brains than mine here ;)