German Superlative Envy

The new BMW 635d (d for diesel) is a nice car, but isn't "World’s most powerful production six-cylinder diesel". The Dodge Rams with 5.9 and 6.7 liter Cummins diesels both have six cylinders and produce 40 more horsepower. The BMW makes a lot of power for diesel, especially a diesel with only a 3 liter engine. But I'm betting the torque numbers aren't close, those Cummins plants produce so much torque they can grind weaker drive trains into dust.