I've flown most aircrafts for a few tours and I find it seriously interesting that people can say a P51 is not a good dog fighter. Ask yourself this before considering it for 8 eny, have you flown this aircraft for a few tours to learn how to fly it? Or just practice what everyone else does: boom and zoom and run?
While everyone is correct a P51 wont roll with a 190 or turn with a Spitfire, what about what these other birds cant do? Where a 190 cant turn, a P51 can stay in his corner, (im talking Dora model not A5, which will in fact turn inside a mustang). Answer is basically P51 is a very balanced dogfighter, you just need to learn adjust your tactics around you to fit the plane. In the right hands and right tactics this bird is pretty much amazing, keep it fast and high it will give any plane a run for its money. Its not the plane that matters, P51 just has awesome all around stats, it just doesn't beat any plane other then speed in 1 general area, this is why its not the "Best dogfighter" out there. Where a 109 can't dive, a P51 can, where a spit can climb, it still can't dive with a p51, using these general attributes is what you need to learn to fight effectively.
Nothing wrong with disengaging and heading home when your out numbered, but its the poptart's that after they make one move and lose they decided to bolt out rather then up another cartoon plane and try something else, or go back to pick and run.
While uptown and SkatSr fly the P51 with pride, I love my Me109g14. Not a fast bird, out climbs a few planes, doesn't out turn, or out run.
I look at it as experience grows and once you learn your ride inside out (im not saying I have) then you break the ice and begin to learn.
Just my input.