ORIGINAL: Ike99
the F4U had the best kill ratio in air-to-air combat of all the Allied types in the Pacific, something like 15-1
I think in UV the kill ratio for the F4U is greater than 15-1.
Wiki
The U.S. Navy counted an 11:1 kill ratio with the F4U Corsair.
From February 1943 onward, the F4U operated from Guadalcanal and ultimately other bases in the Solomon Islands. A dozen USMC F4U-1s of VMF-124, commanded by Major William E. Gise, arrived at Henderson Field (code name "Cactus") on 12 February. The first recorded combat engagement was on February 14, 1943, when Corsairs of VMF-124 under Major Gise assisted P-40s and P-38s in escorting a formation of B-24 Liberators on a raid against a Japanese aerodrome at Kahili. Japanese fighters contested the raid and the Americans got the worst of it, with four P-38s, two P-40s, two Corsairs and two Liberators lost. No more than four Japanese Zeros were destroyed. A Corsair was responsible for one of the kills, although this was due to a midair collision.
Although the Corsair's combat debut was not impressive, the Marines quickly learned how to make better use of the aircraft and started demonstrating its superiority over Japanese fighters.
In UV these Corsairs would have shredded all the Japanese planes. Experience needs to be more of a factor in Air Combat.
I have read somewhere that in 1943 the kill ratio of F4U was 6:1. It was something like 25:1 in 1945, because of kamikazes. So the mean kill ratio was about 15:1, but that was not the situation in -43.