Which tire has the highest Treadwear (UTQG) in size 235/35R20

It's time to buy new tires for my car, but I want to buy a tire that lasts longer than the original brand, OEM. Which tire has the highest Treadwear in this size 235/35R20?

---

320 - Treadwear

 Kumho Ecsta SPT KU31 - UTQG: 320AAA - Tire Rating: 4.17

---

300 - Treadwear

 Nitto NT555 Summer Ultra High Performance - UTQG: 300AA - Tire Rating: 4.13

 Michelin Pilot Super Sport - UTQG: 300AA - Tire Rating: 4.52

---

280 - Treadwear

 Bridgestone Potenza S001 - UTQG: 280AA - Tire Rating: 4.19

 Continental ContiSportContact 5 - UTQG: 280AAA - Tire Rating: 0

---

200 - Treadwear

 Nankang NS-2 - UTQG: 200AA - Tire Rating: 4.5

---