[Glider]

To be fair to Crumpp he is correct about the British having a better production and repair set up so the RAF were never in any real danger of running out of aircraft.

However the RAF were training more pilots than the Luftwaffe which enabled them to maintain the numbrs. No one is trying to pretend that the mid 1940 training of the RAF was up to pre war standards but then again neither was the Luftwaffe training.
The RAF trained 300 pilots a year in 1935, by August 1940 they were training 7,000 pilots a year. You do not get that size of increase without problems and shortages of everything, training aircraft, trainers, airfields take your pick. I do not know the numbers for the Luftwaffe but would expect them to also suffer shortages as they would also be ramping up whilst fighting a major campaign

Basically the RAF were better prepared infrastructure wise that the Luftwaffe (including fuel)

I totally disagree with his assertion that the Luftwaffe consistantly won the air battles. If he could support that with numbers lost compared to actual kills it would be interesting. Or he could explain why so many bomber raids were turned back before reaching the target, a lot got through but a lot didn't.