You should read some of the bordering-on-insane stuff Yeager and his fellows got up to when it came to maneuvering their aircraft in every possible way.
funny you should mention him. I thought that might have been where you got your false conclusions.
Bob Johnson and his fellows got up to the same sort of thing, per "Thunderbolt". Hoover. Etc. These men knew anything they flew cold.
both of these guys were EXTRAORDINARY pilots by EVERY account. If I remember correctly, Hoover had over 1000 hours in multiple types before he even went to combat, which was extremely rare.
And it doesn't a Yeager or a Hoover at the stick to notice
if it doesn't take a Yeager or Hoover to notice then why are you using two exceptional pilots as an example of what the AVERAGE pilot knew or didn't know?
to notice that say, a P-47D couldn't generate quite as much G in a 200 mph turn as a P-51B.
You are making a fatally flawed apples to oranges comparison
who's making apples to oranges comparisons? You're trying to say that because a few American pilots understood the differences in American aircraft variants, that all of them did and that pilots on both sides understood the handling characteristics of MULTIPLE ENEMY FIGHTER VARIANTS.
And you are using test pilots as an example of what typical pilots knew when even test pilots had limited access to enemy hardware until after the war. Yes I know we tested captured enemy aircraft, I'm not going to get into a debate with you about how many. I've been researching this stuff for several years now.
your example of Spits fighting Zeros. In that case, they were acting from a position of zero experience, or rather, a position lacking in Zero experience. They had neither flown nor even fought against Zeros, they had no idea what they were up against.
They were experienced combat pilots from Africa with several aces, they had first-hand knowledge from Joe Foss who had just spent months engaging zeros. And if that was not enough, it was well known from 3 years of combat in the Chinese theater that Japanese planes were extremely maneuverable. There was no excuse. It just goes to prove how stubborn some people can be when presented with FACTS.
Obviously, times havent changed much.
we are talking about two airplanes on the Allied side that were extensively tested by the Allies.
Here's The heart of your misconception. What exactly do you think extensively means in this case? Thousands of hours of flight time? Guess again. I would love for you to show me where I can find data that supports that. I've been looking for it for some time now.
Ack-Ack posted a single report comparing the FW to the P47. I see no mention of mock combat, they drag raced and chased each other around in circles. I'm not saying that's not good enough, I'm just saying that's not extensive. They didn't even identify the exact variant of FW.
That report was intended to prepare every Allied P 47 pilot for combat against the FW. Their lives depended on that information and they put a whopping four hours of testing into it and they didn't specifically identify the FW variant. Is that what you call extensive?
You don't even see a disclaimer like...
"WARNING - This comparison is just one variant of the FW-190. Performance can change considerably from one version to another..."
You have misguided beliefs about how much testing was done. When the US got its hands on an enemy aircraft, more hours were spent taking them apart, putting them back together and analyzing the technology than was spent test flying.
After we got done testing an aircraft it might get passed around to be flown by a few trusted pilots. But after incidents like the time someone wrecked Koga's zero, it seems that kind of thing slowed.
So back to Yeager again, I'm guessing you read about how he used to "bounce" a/c coming in and out of Wright Field and kicking everyones ass. And this makes you think everyone was out there having a good ol time in mock fights <cough> in the name of training and flight testing.
The US didn't have a policy of allowing a bunch of kids to "play dogfighting" with valuable aircraft anytime they felt like it.
1- Those antics of Yeagers were either late or right after the war and times weren't as tight.
2- He was a decorated ace and a Captain by that time and I'm certain given a little leeway.
That's not to say that some didn't break the rules, but in the first half of the war, anyone caught breaking this rule probably wouldn't fly again. It didn't happen as often as you think.
The point of all of this? You seem to think most of these guys had first hand knowledge of whether a D11 could out turn a 51B. It wasn't, it was 99% hearsay.
They did not have to guess about relative performance.
You're right, they didn't have to guess. They had hearsay and... "I flew both and I can tell the pony turns better because my nuts hurt more when I flew the pony in hard turns."
Of course all of them who flew both, and swear that the Pony turns better than a Jug, MUST have flown every single model of the Jug.