Guys,
I would like to point out that the P-51D in Aces High is often judged in conditions that rarely if ever existed in real life.
Given a lead and wingman well versed in wing tactics, the P-51D flown to its strengths is a formidable fighter. Such a team in the MA's can consistently fly sorties where each pilot can pick up 6 or 7 kills with one ammo load, and RTB dragging multiple enemies in a "rolling defense" and still land safely.
There are many players who can take a single inferior aircraft into a furball and still land multiple kills.
But if I wanted to do that consistently, the P-51D and a good wingman (in my opinion) is the best choice.
The strengths of the P-51D, it's high speed performance, combined with well trained pilots using co-ordinated wing tactics is what made it great. If you separate the individual elements you lose the synergy that made it all work.
Badboy