http://www.edmunds.com/insideline/do/Drives/Comparos/articleId=125350 There will be no Camaro vs. Mustang death match this week due to a distinct lack of Camaro, so can we interest you instead in a muscle-car comparison test? Here we have two classic nameplates, each with a 400-horsepower V8 stuffed into a smallish four-door body shell and powering only the rear wheels. Naturally we're referring to those two paragons of modern muscle, the 2008 BMW M3 Sedan and the 2008 Mercedes-Benz C63 AMG. Don't be confused by the German nameplates, the aura of high-tech engineering and the rarefied price tags. The 2008 BMW M3 Sedan and 2008 Mercedes-Benz C63 AMG match up as naturally as any muscle cars on Woodward Avenue during the 1960s.