Some further commentary:
2. The F4F-3s of VMF-221 didn't have armour plate or self-sealing tanks so one would expect them to have better performance than an aircraft fitted with those additional items (as noted in comparisons between the -3 and -4).
4. The F4F-3s were largely flown by more experienced pilots (per Flyboy's hunch earlier).
5. While fighter-vs-fighter claims are an interesting measure of "effectiveness", that was not the mission assigned to VMF-221. Their role was to hit the Japanese bombers and that's exactly what Parks tried to do
6. The Commonwealth squadrons operating in the Far East also used inappropriate tactics.
7. The performance of the F2A-2 was comparable, if not better than, the F4F-3 although neither were truly fit for combat due to the lack of self-sealing fuel tanks and armour plate.
2. Source? F4F-3's were retrofitted with seat armor and tank liners shortly after the war began. AFAIK the only F4F's to enter fighter combat without armor or tank liners were VMF-211's at Wake in their one combat with Zeroes; some USN F4F-3's in the combats with Type 96's in Feb 1942 carrier raids had homemade armor but not tank liners. If generic sources say that -3's in June 1942 lacked these features, they are probably just carelessly assuming it.
4. None of the pilots had previous combat experience. If the ones with more flying experience flew F4F's that's partly a circular argument, it would have been because 221 thought the F4F superior.
5. As always when this dubious gambit is used, such an argument is plausible in case of interceptors achieving say 1:2 ratio's v escorts (Spits v Bf109's over Malta, etc). It's not plausible when the result is totally one sided in fighter-fighter combat. And the actual results show VMF-221 didn't shoot down many strike a/c (see above 5 or 6 strike a/c, causes can't be determined v AA) and the RAF/Dutch Buffalo's didn't shoot down not a lot more total Japanese bombers over many weeks of action than the JNAF's total losses over Midway. If interceptors can't contend with escorts on a *reasonably* even basis, they won't achieve other goals, and Midway and early SEA campaigns show this clearly.
6. Again, same point debated year after year. Yes, *but* when stated that way it tends to imply that tactics is some easy thing to fix. Hurricanes had 1:4-5 ratio v Type 1's in 1942 *and* 1943. Not some easy switch to flip for them apparently, and no one is assuming the unit leaders in those cases were derelict in their duty. The enemy was capable, including his a/c despite their weaknesses, and the Allied models used perhaps not as good as their fans like to believe.
Likewise as we've covered ad nauseum the USMC over G'canal did not use any preplanned anti-Zero tactics. Thach Weave was only used in 1942 in combat by VF-3 at Midway and VF-10 in the G'canal campaign. The F4F units at G'canal did have the opportunity to learn from mistakes, of course the *whole* difference wasn't that F2A sucked and F4F didn't.
7. And this gets back to the confused tendency to speak of a/c capability as if only aerodynamic performance mattered. For example the 'pin cushion tactic' of F4F's at G'canal (just let a Zero on you tail fire into your armor and try to run, don't turn and give him a deflection shot at the cockpit) didn't work with an unarmored a/c. So F4F-3's lacking armor would not have been more capable, but less capable for *combat*. Same confusion with attributing the AVG's success to 'superior' P-40B's v 'inferior' P-40E's (though actually AVG and FEAF both flew a mixture of those types). Yes P-40E weight was used as an 'explanation' for poor results by FEAF after the fact, and also the new a/c had mechanical bugs the B's didn't (gun chargers) and the pilots were less familiar with them. But in general the idea that P-40E was a strictly inferior combat a/c to the B, ignoring its greatly superior firepower when the guns worked properly, is highly dubious.
And we, I anyway am, defining best/worst as *combat effectivness* of fighters. That's not to say it's easy to discern this independently of totally non-plane factors, but if we start mixing up pure aerodynamics or flying fun with combat effectivenes, it gets hopelessly confused IMO.
Joe