Don't forget that the P-47 was used extensively as an attack bird in the ETO after D-day. I would wager that a LARGE number of those losses were due to ground fire of some sort while doing Jabo or strafing runs. It was precisely for it's toughness and suitability to the task that so many 47 sorties were flown. At least give a figure for how many operational sorties were flown by P47's if you want to make a valid comparison. If 47's flew 5 times as many sorties that "three times as many losses" figure will turn the other way.
Granted, the F4U was also a tough bird, but it was never put to the dangerous ground-attack role to the extent that the P47 was. The ground attack roll was a very dangerous one, and for this reason I would expect the number of losses for any plane tasked with that role to be greater than a plane tasked for escort or sweep, at least in terms of number of sorties.
IMHO, the "ensign eliminator" title had it's roots in the rigors of operating a very high-torque airplane from a carrier combined with inexperience pilots. I wouldn't say that the Hog was "unsafe" by any means, that's not how it earned the nickname. Even so I don't think the numbers you quoted support your argument, even if I do think your overall point is right.

Interesting to see the numbers though. Any chance we can see that kind of a breakdown for the P47 (my favorite as you know) and some of the others?
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Lephturn - Chief Trainer
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