They are both, Rhino and CD4 much, much younger on the scene than Max and to complicate the matter even further 3D Studio Max uses a 1-rail and 2-rail NURBS surface creation method comparable to Rhinos loft not to mention a U-loft and UV-loft NURBS system also compatible to network curves feature in Rhino besides the standard mesh-loft and the old standby patch and mesh systems. I find Rhino a more intuitive, user friendly NURBS program than Max but Max will certainly do the same things.