Yes that is what i mean by retop. It is very similar to what you can do in other apps, i know XSI has a similar tool as does Silo.

But the nice thing about doing it in zB is that you can do it for very very heavy meshes that crash most other apps. The max i can handle in XSI for example is like 2 million polys after which it becomes very hard to model. Lightwave starts becoming unstable at 1 million. In zB 2 million can be the amount of polys in a single shoe if i feel like it.

Also note that i'm not saying that one shouldn't learn other modellers, that you have to do anyway if you want to model anything inorganic. I'm just saying that the earlier you learn sculpting the better it is. It comes in handy for everything from modelling to bump/normal maps to texturing to morphs to JCMs and so on.

And i agree C4D is a great app, I use Bodypaint for a lot of texturing and it has a very clean and nice workflow.