I have a simple question:
Why?
Assuming same skill level ("decent") in pilots, a fighter is supposed to have a very distinct performance advantage in any way over the other to give that kind of guarantee.
I'm currently not aware of such an decisive advantage the C205 has over the G6.
Well, obviously I speak for myself. I have always tried to use the 205 as it should, IMO, be used: fast, at medium altitude, using hit & climb techniques. In those condition the F-4 ---> G-6 family has almost always been an easy prey in 1vs1 fights down to the ground.
I had more acceleration, more speed (especially between 10 and 15K), more firepower, more rollrate, generally more maneuverability fighting in a dive than the G family. Everytime I saw a 109G driver nosing down after the merge I knew it was mine. Even the G-14 was often easy to kill. Only well flown K-4 were impossible to catch or difficult to kill. Many 109 pilots think to have always the climb advantage, they usually underestimate enemy's E, thats how you usually get them if you are fast.
I think your probably right if you imagine same skill pilots, CO-E, CO-ALT ... but it is only theory. In the main arena I killed almost all 109's I found.
And maybe I was lucky, perhaps the best 109 pilots flew Knights like me
