AH's gunnery model is too simple to be real, and damage is too magnified. In RL, one hit in the tail or the wing would rarely get such catastrophic results as you get in this game, except on japanese rice-paper planes.
From an RAF report "EXAMINATION OF BULLET STRIKES ON CRASHED GERMAN AIRCRAFT "
Effect of a Hispano 20mm hit on the tail of a Ju88
"Blew a hole in the leading edge measuring about 18" vertically and extending about 18" back from the leading edge on both sides. Also distorted the fin and lifted it's base just under the leading edge, about 9" from the fuselage."
There was also a lot of fragmentation penetration, up to 5 feet from the point of detonation.
That was probably the single hit that brought the Ju88 down. Another Hispano shell blew a large hole in the tailplane, and some AA shell splinters perforated an aileron and the tip of the tailplane.
If a single 20mm can lift a Ju88 fin 9", it should make quite a mess of any fighter's tail.