These aren't rigged, i just changed their geometry by hand.But actually having done both i can tell that it is at quite the same level. With highpoly characters you need to blend the weights properly, which takes a lot of time, but trything works pretty well out of the box, if the geometry is good and clean. With Lowpoly characters you really need to worry about the deformations at the joints. That means that you really need to tweak the geometry in combination with the bones and weights to get ood results.So both are hard as far as i can tellBut i am not super experienced at rigging yet.