ok... but pilots shortage is another subject, i wanted you to focus on the industrial war production: in 1940 Britain produced 15,000 planes, the nazi just 8,000. and there is much more that could be said....
Basically, in '40/'41 the nazi were strong because they had been stockpiling weapons for a decade while the allies just started in late 30's.
But when the allies pressed the pedal to speed up the industrial war production the nazi couldn't do anything but eat the dust.
the nazi state in fact proved to be the kingdom of inefficiency, deadly burocracy, privilige, corruption at all levels, complete lack of coordination, rationality sacrificed to propaganda....
exactely the opposite of what propaganda had been portraing for years.
i suggest everybody to read the famous Goebbels speech of feb '43 about Total War.
i know i'm oversemplifying, but i think this gives an idea of the situation.