Hehe, trust me Altea, there is plenty of evidence to show that the Bf-109 turns a lot tighter than either the P-51 or Fw190, both in the form of testing and pilot testimonials. According both to pilots physics the Bf-109 was even a close match for the Spitfire when it came to turning. I believe the Spitfire generally might have been a bit better though, except for the Mk.XIV vs the 109 K-4.