Real combat over 600 reports:
P-47 Encounter Reports
In these: The P-47D
always out-turns the Me-109G in sustained turns, always in less than 3 X 360 typically. It almost never out-turns the FW-190A but is close to even until mid 1944, then it is badly out-turned by later A-8s.
In here, 700 P-51 combat reports;
Mustang Encounter Reports
The P-51 often has trouble out-turning the Me-109 (up to 45 X 360(!!!): Two instances of 15 minutes of continuous one-side turning, plus one of 30 minutes on "Dogfights"!),
unless the P-51 downthrottles. Not the same with the FW-190A, because the P-51 often out-turns it very quickly at high altitude or at high speeds (no contest there) in less than one turn. At low speeds and in low altitude turns, there is very often a note from the P-51 pilot that the FW-190A pilot is not using his airplane to the full, and is timid in pulling the stick because of a nasty stall (never any such statements for the Me-109G)... Yet despite this, at low altitude and at low speeds the FW-190A is always much more of a challenge in turns than at higher altitudes or higher speeds (often 4 turns or more, versus no ability to contest turns
at all when higher or faster, constantly shifting sides on the ailerons instead)...