Well, I have to say that the AH G2 is a wonderful machine: 5'50" to get to 20K. Official data say 5'06". With the *same* engine, she was some 200Kg lighter than the C.205 (prolly due to the light armament). The C.205 now takes 6'30" to reach angel twenty.
The power loss after 15K of the C.205 is too big. Official tests done by Luftwaffe showed that the "Veltro" was able to stay with the G-4 up to 6,000mt.
I hope HTC will give back the 0.45 power to the Macchi. It was historically correct

Now she's a 1943 dog.
It will be interesting to see the comparison between the F4 and the incoming (?) C.202. They had almost the same performance ...... lets see.