You show me a 109 that needs perking and I'll agree. So far none have shown anywhere near the qualities of the 16.
Even you have to admit the spit16 is as good as the 14 in every area (speed difference is minimal), and better in roll rate. The 109s, it seems, got their effectiveness drastically reduced (losing gondolas on 2 planes, losing 30mm on G6, E4 rolls like a pig at all speeds, all 109s roll like pigs below 175mph).
Show me one, and defend why it needs perking.
You can't just say "If you want to perk a spit, then you have to perk a 109" because it doesn't work that way. They are not correlative. You might as well say "You want to perk a spit? Then you have to perk the La7!" -- in which case you might have an argument based on performance.