dadt, the only thing those lack are the soft "area" shadows that GI and ambient occlusion bring to the contours and angles of shapes in the render. Using the ambient channel in the material room is good for bringing out the textures in the darkened areas of the model, but it also tends to wash out realistic detail (note the ear on the "shadow" side of the character has almost no shadow depth and detail compared to the ear on the lit side). This is where simple ambience enhancement falls short as a substitute for IBL/AO or true GI for such things.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.