...How can you have the slightest idea on how behaved these planes in real life?
I have been flying a 5700lb 600hp radial engined t-6 texan about every other weekend sometimes in formation with another t-6.
if your interested in what flying real warbirds is like I recomend the t-6 as it is actually available in many locations with about 5-600 of them still around and a good majority are flying. the cockpit of the t-6 and p51 are quite similar with them both being built by north american. it is said the p51 is actually easier to fly.
back to your origional statement of how these planes behave in real life...
let me say this. Aces High models the airspeeds and the flight characteristics just fine. what is not modelled is the actual sensation of you being in a fire breathing military warbird with its deafening engine noise, vibration, heat, wind, turbulence, G forces and the actual workload of maintaining visual contact with your target and or wingman while the horizon is going in strange directions.
the game gives you a glimps of the real thing and its depiction of the area being glimpsed at is very well done and entertaining. the rest is beyond our current technology.