F4u1C will out turn the La7 all day.
The la7 does have speed and accel advantage.
If La7 starts with E advantage, it's a tough bird to fight for any airplane in the game.
The F4u1c, like predator said, has the ord, fuel, and better guns than the La7. However, I think the La7 is much more versatile at low alts, getting away from gangs of enemies, and can gain steam a lot more quickly than the F4u1c.
The F4u1c is a great plane to fight against cons that are lower than you. But in a furball Vs 190Ds, P51s, and La7s, you aren't going to have much fun against a good BnZer.
If only the F4U1c was a little bit quicker off the gun it would greatly help it, but it takes a lot of patients to fly a Chog, Slow climb, Slow Accel. VS a plane that takes 0 Patients like the La7 that can get to high alt quickly and excel very quickly. It is almost 2 different fighting styles. The F4U is a great BnZ plane and Great turner, But you cannot do them both well at the same time. Whereas the LA7 is more like a 109 where you can be both a BnZer and turner at the same time and for the most part, get away with it, and even be able to escape (extend away) from multiple planes, you cannot do that in a Chog without fighting your way out.