If the Jak3 could outfly the 109F, it could also outfly the spit9, ki84, f4u, etc etc so falls into the same category as the zeek, hurricane, brewster??
I "heard" that it could do a sustained circle in 17 seconds, thats pretty much the same as the 109F, also their top speeds are quite simmilar, also the 109F has a very small turn radius with flaps, 410 yards.
Lets hear the Jak experts : )