The thread is lost and HTC will not have read this far.
BUT
The spit 14 would not break the game in MA at all if it were unperked. The 16 pilots who will switch to it, much like the 190D pilots who switched to the TA152 for the same reasons - hay man, its faster, it has better guns, and its so cool looking!! - will yank the stick in a vert stall, throw the rudder at all in a high G low e yo yo and it will spin like a top (sound familiar?) and die. They will die over and over again until they realize, like the dora pilots, that the 16 is still better (which it is). The only thing the Spit 14 will be fantastic at will be BnZ (but there are a host of other planes that can do that), and chasing down P51Ds (again, the dora can do that, but it would be nice to get something else that can too).
All in all, the 14 is actually not that great a plane for the kind of combat we do here in AH2 - it will be able to break some nice high/low situations - but the 109s and KI-84 and even the C205 can do that great already and it will run like a little girl and no one will catch it - but it will suffer from the fuel hungry nature of the spit 16. . . ultimately the spit 8/9 will remain the definitive spit because it has the lazor sighted Hispzookas and some 303s for those seemingly consistent pilot wounds (but that is because in both the 190 and 109 I seem to get a lot of 303 pilot wounds).
There is really no reason to perk it, it will see some action against bombers like the TA152, but it will not break the game below 15k where 90% of the battles take place.
The caveat argument that 'in the right hands its unstoppable' holds true for any plane. After the middle planes (109G2, Spit 8/9 etc) the performance is almost negligible and in fact, the slow speed stability of the plane, especially in the stall and in the roll become much more important then if it does a top speed 5 o 10 miles faster.
Ruah