it needs the acceleration seeing as the guns are useless beyond 300 or maybe a bit more if ur lucky. 50cals are sweet to 600 at least. the 30mm on the K4 has much the same effective range of the La7s guns, yet almost any contact with a 30mm shell is an instant kill, and those who can shoot the tater are far more deadly than those who can shoot the russian 20mm. you dont survive giving away one half second snapshot to the best gunnery of a 30mm.
as for the flying, all 3 aircraft can outfly each other in the right fight.
all, obviously, in my opinion only.