You are comparing apples and pears again. While the Performante has better grip than the 720 S it does not have the torque to launch as hard as the turbo cars. Here is your answer in simple terms:

Performante - lots of grip, good power but lack of torque.

720 S - lots of torque and power but lack of grip.

Turbo S - lots torque and power and the best grip of them all by virtue of 4x4 and most weight on the rears wheels.

The driver of the Performante was not great and probably left one or two tenths out there - even on the third attempt. That said, over 400m the Turbo S should beat the Performante the vast majority of the time. Above 200km/h they would be much closer though and as we all agree the 720 S would be much faster than both of them above 200km/h.

No need for any conspiracy theories here.