Superior Range is a great thing. You drag the -1C around the arena like a kite, until he starts to worry about fuel and now the fight is yours. He can turn around and run to base (giving you the shot and position) or he can try to fight you and run out of gas. Even with the large fuel load of the Corsair, its a very thirsty beast compared to the Mustang.
Yeager, I gotta agree with Ripsnort. Got Film? The only way in the world for this to happen is if the P-51 is carrying 8 rockets, and two bombs/drop tanks, and the -1c is fuel light. Not only is the P51 appreciably faster, it also accelerates faster.
Nath, yes a superior pilot flying better tactics can beat the -1C as you describe, but if the pilots are of equal skill what you descibe becomes very dangerous due to the -1C's cannons.
------------------
Vermillion
**MOL**, Men of Leisure