So I got a little curious.

The F4U-4, without instructor limits, is on par with Bf 109 F4 and Yak-3 in sustained turns at their lift limit.
(I was checking P-63A5 as it ended up turning far better than I expected and then I had to check the rest and … These 4 aircraft are basically only differentiated by whoever has better geometry and energy management when it comes to sustained turns (and in SB: The ability to not over-pull and spin yourself into the ground… F4U and Yak-3 have their incredible roll rates as extra advantages over the 109F4 and P63 though.)
(Values are with 0% flaps, 30% fuel, and 110% throttle)
(also granted, sustained turn is not everything to dogfighting.
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P-63A5 won this matchup in a live game by making it a one circle fight).
