With a claimed 950 horsepower from the 997.1 Turbo, which is backed up with the result, it is not surprising it beats the Aventador. Just goes to show how strong turbo cars can be. Yes, the race takes place in the wet (not recommended with a very damp track but considering both cars are all wheel drive they share a similar disadvantage and obviously it is not as bad as if they were rear wheel drive.
The Aventador launches nicely and is able to hold off the 911 Turbo for a bit but then the horsepower disparity simply takes over and the 997 Turbo pulls away. Yes, the Lambo loses, but it's still the car anyone would rather go home in. Put a couple turbos on the Aventador and let's have a rematch and see what happens.