Sure you can rig figures in C6 Pro! Remember Carrara is a full-fledged modeler too. I don't think rigging in C6 is comparable to let's say 3ds Max, but it's there and it works.
As far as the dials are concerned, that's purely personal taste. I grew up on 3ds Max, so it's natural for me to manipulate body parts directly when posing a figure.
Carrara uses sliders for morph targets though :)