The quality of the 3D models can be improved very easily by most 3D software packages. A lot of artistic 3D modeling these days uses a technique called subsurfing, where the artist creates a low-poly (easy to manage) model, and the application 'smooths' it into a much higher poly model. Usually you can supply options; i.e. leave really sharp angles (spikes on armor for example) alone, to preserve detail, although you may have to retouch manually in some cases.