It was worse than that. The zeros had an engine that pushed their machine to turn right. They also had no maneuverability at high altitude, much like the FW109. There are several instances of P51’s meeting their opponents at high altitude, only to have their opponents fall into uncontrolled flight, while the P51 pilots simply picked them off.
In some ways, it wasn’t very ‘sporting’.
Fw 190
Bf 109