I would love to see how they came up with a statistic that showed that most pilots were not aggressive.
It came from WW2 pilots. A simple regurgitation of what was said is that in any squadron you knew there was a small percentage of guys out there making the kills and getting in the thick of things and a few who were along for the ride but weren't aggressive like we always see in Hollywood.
Maybe "statistic" was misleading because it wasn't scientific, but it comes from a discourse with pilots who were there and was their opinion.
I don't hold any disrespect for the real pilots. It was real life and death.