Have gotten into a couple of turn fights in P-38's against Niki's, and La-7's, and noticed the P-38 to my shock and amazement was outurning them. This was a all flaps out, stall fight, at 10 feet off the deck, on both occasions i believe.
It seems to me that the 38 although heavier, is able to sustain a turn at very low E and get the max possible out of a turn without fighting torque and spinning out. Both planes seemed to have been gaining on me before we really slowed down in the turn.
Out turned a few Corsairs and Spits in the same situation. Some just spun out and hit the ground, the 38 was still going.
I personally think the 38's engine arrangement, it's long slender wing, (almost kind of like a glider in wingspan chord ratio), it's flaps are doing this.
Possibly also i believe it's engines produce alot of thrust to brute force power it around without the torque issue. Sort of like an F-15's powerful engines today.
Anyway i've seen it do this before but this time it really surprised me.