Motul X-cess 8100 for a HPDE Car?

[Beanster]

Is Motul X-cess 8100 suitable for a track car that is used only for DE's (no actual racing)?
How does it compare to Castrol Edge?

The car is an '07 Porsche 911 Turbo.

 

[dailydriver]

Is it cost, lower TBN/short OCI lack of longevity, lack of A40 specs, or something else that keeps you from going with their excellent 300V Trophy 0W-40??