[ACE-OF-ACES]

Frontline fighter performance varied wildly. It especially departs from official factory and test pilot data.

and

I would agree that frontline fighter performance did differ substantially from data recorded by test pilots in factory fresh aircraft and prototypes,

Just wondering what these statements are based on..

Can you give me an example?

Reason I ask is this 'idea' seems to be a common one

I myself have held the same 'idea' for years

But to be honest I don't have documentation to support that 'idea'

That and I think it means different things to differnt people

My 'idea' goes like this

Rolling off the assembly line, a Henry Ford type where variance is minimized you would have some variances

But they would most likely be small

So small that you probably wouldn