Agreed it wins for Cd. My point is apparent in the last pic. The ducktail shape is mandated but the body taper starts at the rear door. They let the inside structure of the door dictate the evolution of the surface.
The reason I prefer the Brock Shelby coupe is the XKE windshield doesn't fillet into the hood (and the boxed cavity tail). See the Talbot-Lago coupes or even the VW Type III.
http://images.hgmsites.net/hug/super...00457550_h.jpg