The thing of being too round is probably caused by the renderer on p3d and/or blender (the )linked images. Normally you want things to look roundish (does that word exist? ) and so the renderers get a dynamic smoothing going on (in C4d it's called the phong-tag, don't know the exact name on the other packages atm). If you set wireframes on on p3d you'll see the exact faces and how this will look without smoothening ingame.