I tried watching the OP's video, but after 5 minutes I just couldn't take the exaggerations, wild animations and bravado. I much prefer the following recounting of that fateful day in Johnson's life, told by the man himself:
Btw. in this extraordinary machinima they say that "Half Pint" took 22 cannon hits. If accurate, that's an astonishing, simply incredible amount of damage for a P-47 to survive. That's what the Luftwaffe found was needed to bring down a four-engined bomber! On that day Johnson must surely have been the luckiest man alive.