Gee, I posted the same pic in colour, and I got no response...
The RAF got their Mustangs in Feb '42, first combat was in June-August. An American volunteer flying in the RCAF shot down a Fw 190 over Dieppe for the first Mustang kill.
The Mustang Mk I(P-51) was 25-45mph faster than the Spitfire Mk V up to 20,000ft, and at low altitudes it was also faster than any German fighter, including the Fw 190.
The RAF used the Mustang Mk I for low-level armed recon until 1944, when they ran out of servicable airframes.
Pyro should have made this plane instead of the F4U-1C. Since very few people seem to know it existed and was good, it would have been extremely funny to see the "reaction" on the BBS when it filled the arena.