These models are designed as a starting point for character modelers for any photo-real character. Since the geometry is already designed to deform correctly, it is a simple matter of adjusting proportions and enlarging or smoothing out muscles to get a desired character.
Why start from scratch when you can start with 9/10 of the model already built? Adding detail is a snap as well as simplifying for softer bodies.
UV's are laid out intelligently. no textures included.