Here is my opinion:
i like turning and for me, the Spit5 vs 109F isnt even close due to the Spitfire's much better maneuverability.
pervert and I tried this match up and if I didn't bring him down within the first few merges, the 109F has a much better engine and can get on top and stay on top in climbing circles.
109E vs Spit1 Spit should win as long as he doesn't stall out badly or do excessive negative G manoeuvres losing energy in the process
109F vs Spit5 109F can win if he flies smart and uses sustained turns over yank and bank
109F vs Spit9 Spit 9 all the way haven't found a 109F pilot that would win in a straight out fight.
109G2 vs Spit9 Spit 9.
109G14 vs Spit8 Spit 8, the earlier 109 models stand a better chance of exploiting any mistakes.
109K4 vs Spit14 K4 all the way, Spit 14's handling slow is dodgy. The 16, 8 and 9 would all lick a 109k4 if he stood and turn fought.
Hopper and Jo have thrown various 109's around to really make my Spitty work 100% to beat them but the 109 vs spit fight is much closer than some luft cry babies would make out as long as they fly with aggression, purpose and stick time.