S!
He and his wingman use Russian green skins on their planes so expect them to vanish

Seriously, I watched all videos on ATAG forum and he quite well managed to turn a fight to his favor from equal E or even get away from a chasing Spitfire. His flying was OK.
The point is that when he gets a firing solution he usually hits the target and dealing good damage so he can finish you off. What I see is that he uses BnZ against Spits and Hurricanes, never turns with them more than 45-90deg. Instead climbs up to gain alt and dives down on the "stick in stomach" Sissy/Cane and pumps in more lead. Rinse and repeat.
I wish I could shoot that well..my flying will never be good LOL