A couple of points...
While the Typhoon is a fun plane and quite lethal, it is at a general disadvantage against the F4U-1C should it be forced to fight Co-E or worse.
Inferior turn rate, grossly inferior rate of roll and a very vulnerable radiator all conspire against the Tiffie. On the other hand, it accelerates faster and can attain a higher deck speed than the F4U-1C. Given equal pilots, the Corsair will win most fights.
As to the P-51D and F4U-4, you have a more dissimilar situation. The F4U-4 is faster on the deck by about 5-6 mph. It also climbs faster than the Mustang (significantly faster) and accelerates much quicker. Add to this the excellent rate of roll and those wonderful flaps and the F4U-4 wins most encounters.
Some gents have commented on the Spit XVI. It certainly is a capable fighter, but not to the extent that it cannot be handled with careful tactics and good flying. Krusty likes to fight them with the Spit XIV, and that plane is fully able to deal with the Mk.XVI on more or less equal terms down low. However, the higher the fight, the more the Griffon Spit widens the performance gap. Besides, the Spit XIV is a terrific E fighter, probably the best in the game above 12k.
Advantages/disadvantage: The SpitXIV is about 16 mph faster on the deck than the SpitXVI. It also accelerates faster. Climb is about equal to 12k, but from there up the Griffon Spit pulls away. Roll rate goes to the Mk.16, and it turns slightly better to the left, and more so to the right. As I said, a pretty even fight down low if each fights to their particular strengths. However, if the Spit 14 pilot decides to turn fight Spt 16s on the deck, he will not win the majority of the fights, assuming equal pilots. Yet, start climbing above 12k and the Mk.16 begins losing much of its luster as altitude increases. I've measured the Spitfire Mk.XIV at 444 mph at 28,500 feet, 404 mph (10 mph faster than the LA-7) at 10,000 feet and 359 mph at sea level.
I'm not an advocate of perking the Spit XVI, but I do believe that the Spit XIV should now either be unperked or perked no greater than the C-Hog.
My regards,
Widewing