How does the Audi R8 compare to the Porsche 911 on the track?

I am considering purchasing either an Audi R8 or a Porsche 911 for track performance. I want to see how these two cars stack up against each other in terms of lap times, handling, and overall performance.

According to track tests conducted by Car and Driver, the Audi R8 has a quicker lap time compared to the Porsche 911. The R8 was also found to have better handling and braking performance on the track.