Changed my mind. Since I was challenged to get technical, I shall get technical. This is nothing that Widewing before me has not done, but since people are apparently under the impression I am simply deluded by History Channel propaganda as regards the P-51 Mustang, I suppose I must rehash.
DokGonzo's test website shows that in-game, our lightest Jug, the P-47D-11 can sustain a tighter radius than the P-51D both with no flaps and with full flaps. This is not in concurrence with the experiences of test and combat pilots during the war. Let us take a closer look at both airplanes.
In AHII, a six-gun P-51D carrying 50% fuel weighs 9,365 lbs. A P-47D-11 with the lighter 8-gun package carrying 50% fuel weighs 12,676 lbs. (Note: The P-51 of course can carry a larger fraction of its gross weight in the form of fuel, the P-51D will fly slightly longer on Mil with 50% fuel than the P-47D-11 will with 75% fuel.)
The P-51D has a wing area of 235 square feet. The P-47D has a wing area of 300 square feet.
9,365/235=~39.9
12,676/300=~42.7
So the P-51D is clearly superior in wing-loading.
What about power-loading?
Assuming the figures for WEP horsepower in AHII agree with the ones I was able to find for WEP horsepower of the P-51D and early P-47Ds, we get this result..
9,365 lbs/1,720hp=5.44 lbs/hp
12,676 lbs/2,300hp=5.51 lbs/hp.
So the P-51D is also slightly superior in power-loading.
In AHII the P-51 is out-turned by an aircraft that is decidedly inferior in wing-loading and also inferior in horsepower, in both no-flaps and full-flaps configuration.
My gripe has nothing to do with whether or not the Pony should be out-turning 109s, Zekes, or winning the war single-handed.