Mk 1
That theory doesn't take into account the changes the Germans made
to the weapons used and that they didn't target the fuselage in case they
detonated the bomb load.
In addition, they targeted the wing fuel tanks which it was said caused
an instant fire and or explosion. So those who made it back with a heap
of holes in the wing might have given a distorted view.
But of course they didn't know that.