Well...
These are from American Hundred Thousand (AHT), easily the best American Fighter book ever published. I won't give numbers since most would typically require a graph.
P63C vs P51D Comparison
Max Speed:
P-63C has better speed up until 20K, where the P51D becomes superior
Times to Climb:
P-63C is vastly superior throught the entire altitude spectrum.
Range & Radius:
P-51D is has much better range, with and without droptanks (both are dropta
nk capable)
Takeoff Distance:
P-51D has a shorter takeoff distance.
Roll Rates:
P-63 has better roll rates
Turn Rates:
P-63 has superior turn rates
Level Flight Acceleration (250mph):
P-51 accelerates better
Vertical dive Acceleration:
No data given for P-63, P-51 ranked 2nd overall
Dive Speed Limit:
Tie, both are 500mph dive speed limited
Visibility:
P-51D has much better visibility
Firepower (opinon):
P-63 has x4 .50cals + x1 37mm, P-51 has x6 .50cals, opinon is that edge goes to KingCobra
There are several others, but what it comes down to is personal preference. How do you like to fight and at what altitude? Personally I think the P-63 would fit my style much better, but they are both very capable aircraft.
------------------
Vermillion
WB's: (verm--), **MOL**, Men of Leisure,
"Real men fly Radials, Nancy Boys fly Spitfires

"