This isn't what Daz Studio uses. Poser's smoothing is subdivison too, but it's much more subtle than the Catmull-Clark subdivison which D|S uses. 

See the image, two times the same mesh. The green one is subdivided via Catmull-Clark. If you would bring the low-res mesh into D|S, it could render it like the green one. Poser would need a subdivided model for that.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.