OUUU DTM and Formula 3, you don't say...
Yes you can say one brand is better than another, especially when it comes to motorsports. Porsche is a Motorsport Company and they have been from day one. Thats a cold hard fact I don't understand why you people are having such difficulty with that.
Porsche does motorsports better than Mercedes does, PERIOD. Porsche is the record holder for Le Mans overall victories, the crucible of sportscar racing. How many companies do you know that have won overall at Le Mans and the Dakar Rally? Exactly, just one, Porsche.
Porsche is currently the world's largest race car manufacturer. In 2006, Porsche built 195 race cars for various international motor sports events, and in 2007 Porsche is expected to construct no less than 275 dedicated race cars (7 RS Spyder LMP2 prototypes, 37 GT2 spec 911 GT3-RSRs, and 231 911 GT3 Cup vehicles).
Porsche regards racing as an essential part of ongoing engineering development—it was traditionally very rare for factory-entered Porsche racing cars to appear at consecutive races in the same specification. Some aspect of the car almost invariably, was being developed, whether for the future race programs or as proof of concept for future road cars.
Racing is their methodology, while Mercedes uses it for Marketing. Yes Mercedes has a racing History not once have I denied that, But again, its no where near as robust or impressive as what Porsche has done....