Heya Widewing,
You mentioned under 10k the superiority of the F4U-4 over the P-51D at low alt.
Well I had a dicouraging encounter with a P-51D the other day where after I blew an ealy kill oppertunity I attempted to seperate. After an initial sprint out from 10K I gained about D1.0 full WEP from 10K to the deck he caught me. Not slowly either, I mean he caught me like I was standing still. I needless to say I was dissapointed with the result.
BTW if anything I had an E-advantage when seperating. Maybe over 20K she can out run them but not down below.