I've said it once, I'll say it again, and I'm sure I'll say it again: there is no other "fighter" that is as capable as the Spit 16.
It climbs, turns, rolls, and keeps E with the best of them. Its speed chart is nothing to wave off, either. While not the fastest, it moves average at worst in the LW arena, and well above average the higher it gets to 20k. The paired 20mm and a couple of.50cals need nothing said about them. The Spit 16 also carried 1000lbs of ordnance (1/500lb and 2/250lb). That is 3 dead tanks, plus all the air kills one were to tackle while diving in and out.
Compare the Spit 16 and the Spit 14. Keep in mind the typical operating alts for AH (15k max and lower), the only real edge the 14 has is a wee bit of speed and climb from a dead stop. Otherwise, of both have equal or near equal E the race will be very very close, with no real advantage for the 14 until 20k alt is reached. Now, with those 2 very minor attribute differences in mind, take all the other advantages the 16 has over the 14 and I, like many, do not see the reasoning for the 14 to be perked and the 16 to not be perked. Whatever the logic is, I'd wish it be explained.
Why do the ENY scores stop at 5? Why not cut off some of the "borderline" airplanes with the slightest imbalance of teams? Put some of those planes at 2 or 3 ENY? Keep the perked planes perked, and make the really high value ENY aircraft very ENY sensitive. Make the perked aircraft and the really high vaule ENY aircraft "red line" into a bit of a blurry gray line? Yes, there may be a time when the Spit 16 couldnt be taken and the perked Spit 14 could be... but hey... why not? Think about it.