I would avoid Cups on Turbo PDK or Turbo S. Yes, grip is better but, this tires are prone to temperature differences and need long warm-up period.

Interesting enough someone who I trust told me that Turbo S is actually faster on the track with P Zero N2 then with Bridgestones RE050 N1. Grip is also better on front axle with P Zeros. Just, Porsche from marketing reasons puts Bridgestones on most 997.2 Turbos.