There are a lot of things wrong with this "test"
1 - If you want to compare how fast 2 vehicles are you don't have both vehicles running at the same time as they will interfere with eachother on track.
2 - Speed should be determined by an uninterrupted lap time.
3 - You need to have equally skilled operators in their respective vehicles. A professional and well experience motorcycle journalist vs some amateur rich guy is not even.
This is the way to properly compare a car and a bike:
YouTube - Lamborghini Gallardo Vs Ducati 999
Had Tiff been driving that Scuderia I think the results would have been VERY different. The bike might still have won, but not by such a massive margin. Personally, the test looks pretty staged. The car isn't being pushed AT ALL.