If you want to know how the F4U-1 stacked up against it's enemies you should read the first person accounts of the men who flew them in combat or in flight comparisons against captured enemy aircraft.
Captain Eric Brown of the RNAF is considered by many to be one of the best pilots of WWII and the post-war period. He has logged tens of thousands of hours testing hundreds of combat aircraft. The RNAF operated the Seafire, Wildcat, Hellcat, Corsair, and many other aircraft. Brown tested them all, and flew some of them in combat. Not being affiliated with any aircraft manufacturer, his comments about them can be considered relatively free of bias ( He can be forgiven, perhaps, for his preference for the Spitfire. After all, he was only being patriotic!)
In his book "Duels in the Sky" Captain Brown offered the following comments about the F4U-1:
1. The roll rate was exceptional, even at high speeds. (He seemed to prefer the 190's roll rate, however.)
2. Excelleration was brisk for such a large aircraft.
3. The climb was disappointing, in light of the power available.
4. It had a high top speed, which would be an asset in the environment of the Pacific.
5. Turn-rate was poor at low speeds, requiring the Corsair to make high-speed attacks against its more nimble Japanese opponents.
In comparisons between the F4U-1 and the F6F-3 versus the FW-190A, Brown made the following comments:
F4U-1 vs. FW-190A: "Having flown both aircraft a lot, I know which one I would prefer. The FW-190 could not be bested by the Corsair."
F6F-3 vs. FW-190A: "By 1943 the FW-190A was beginning to be a bit long in the tooth. While the F6F-3 was a relative newcomer the superb technology designed into the FW by Kurt Tank was not outdated. The Hellcat had broken the iron grip of Zeke in the East. The Fw-190, however, was a far tougher opponent. Risk to the Hellcat would be severe. This would be a combat so finely balanced that only individual pilot skill could determine the outcome."
Regards, Shuckins