Check out the race here: Evotech Panamera vs RS6 on Dragtimes

Even stock these two cars are well matched. Of course, nothing that hits the track at the Moscow mile is ever stock. Both cars are tuned by Evotech to around 700-750 horsepower. Well, the Audi is 750hp, the Porsche is unknown. But after seeing how they compare, it's easy to say that it's probably making at about as much power.