They have performance but they suck at everything else since they perfrom the same form SL to 30k, ie unstable stall worthy uncontrolable plane of death traps.
1. Low visibility(exagerated cockpit bars.
2. random dispersion even when firing at convergence and close range >200y.
3. Major E bleed when even making slight control corrections.
4. Very high accelerated stall (even at 350mph 190s and 109s stall while only pulling 5gs at altitudes below 20k)
5. Since these planes perform best above 250mph leaves us with the complete lack of contorl below these speeds, for example a 109 to pull the same radii as an F4u or a P-51 has to pull twice as many Gs, while a heavier aircraft with lower thrust to weight >20k ft has only to pull 2gs to make the same turning radii, there's some thing wrong there. (Wonder why in mock fights the F-16s were able to out turn the F-15s below 20k and above that the F-15 made a diference, having a thicker wing and two engines compared to the stubby wings of the F-16 that are great for lower altitudes but up high not so much.,9this is a modern day example of what happens when even though the F-15 is higher the high altitude performance is better, but the F-16 takes it down low because of its weight and relative size.) Yet in AH they the 109/190 perform the same with lack of control from SL up to 25k, there's no difference.