Everything is a "hole", unless you claim that a hit from a mine shell would take a B-17's wing clean off.
You need to look at bigger things like Ju88, B-17 and Lancaster wings.
The Luftwaffe commissioned a study on A/C weapon effectiveness against the Heavy bombers.
It concluded that it took an average of 15 rounds off 20mm to guarantee the destruction of a Heavy Bomber.
The average fighter pilot could only land around 2 percent of his rounds on target. This meant an FW-190 firing it's total ammo load could only land between 10-12 rounds. Hence two fighters would be assigned to one bomber in order to ensure destruction.
Now it only took 2-3 rounds of Mk 108 30mm to have the same effect.
What I am getting at, and you are steadfastly ignoring, is the tendency of certain people to romanticize the German hardware to the point where they have drastically unrealistic expectations of Allied hardware.
Actually I think it is the other way around. People tend to view the Kinetic energy delivery of the Hispano's as much more powerful than the chemical energy of the M-Geschoss rounds.
You even hear the argument of M-Geschoss "bouncing off".
Anybody ever fly FA 2.5? The Hispano's were one-shot wonders and could hit out to 1800 meters while the MG151's were not much better than a. 50cal.
All based off of kinetic energy delivery calculations.
Facts are the Luftwaffe did a very good analysis of air-to-air weaponry and chose the correct philosophy. This is back by Tony William's excellent research into fighter armament effectiveness.
Now a fighter can take less damage. One or two rounds of any 20mm HE should give you a great chance of knocking it down.
Talking about damage and relatively fragile aircraft is pointless.
Absolutely correct.
Was thinking on a spit wing.
Would be destroyed, as would a 109 or a 190 wing that took a hit in the main wing spar from an allied 20mm. The allied shell would give a slightly higher chance of flying away but not by much.
Crumpp