Filling it with mg151/20 rounds and it not going down is another. The Attrition model is flawed or the modleing of a 151/20 round is flawed.
..and as I said Pongo, the
"filling it with MG151/20 rounds" might not be what is actually happening at all!
The only real way to figure out how the shots are doing is by recording it as a full track, and counting the shots(including non-explosive 20mm AP rounds) and seeing just how they hit where.
All the 20mms more or less have it going the same way, and it's not just the MG151s - if the shot is spread out, mixed with lot of bad quality shots, the plane will not fail in its structure.
And when you actually do the analysis, anomalies are hardly seen. 4~5 rounds concentrated onto a single spot, will kill a plane. Bombers taking more upto 10~15 concentrated rounds on a single spot. (though bombers are actually pretty easy to set on fire)
...
Now what I agree is, even if the 20mm shots are spread all apart, some 10~20 rounds pumped into the enemy plane should have an adverse effect - granted, FB/AEP planes may be too tough to down despite all the 20mm shots, which in real life, even spread apart, would have shed away most of the stressed skins and fragile parts so the plane loses incredible amounts of lift.
