Perhaps so, but in the pacific, the number of engagements the F6F had before the F4u was "widely" operational was staggering.
Compare the total P-47 ratio (not just one group) with the total... say... spitfire ratio.
I'm not saying one plane is less effective or less capable, I'm saying one had a helluva lot more time, opportunity, and enemies, to rack up a better historical kill ratio than the other.
Doesn't mean one was better than the other (which the post I quoted seeme to imply). Just saying one had a chance the other did not, and with equal time, opportunity, and exposure to the enemy, that kill ratio may have been different between the Hellcat and Corsair.