German engineering meets British charm as Jonny Lieberman pits the 2013 Mercedes-Benz CL65 AMG against the 2013 Aston Martin DB9 on this episode of Head 2 Head, While both brands are synonymous with luxury, underneath their hoods lies some seriously massive hand built V-12 engines. Dynamic testing & mountain roads await as we find out which is the better super coupe for the modestly wealthy.