"the way British industry comprehensively out-performed German industry from the mid 1930s to the end of the war "
The Germans weren't on anything like the same war footing as the UK until late '44 and even then Speer could never get Hitler to go for an absolute war economy
The British were ruthless from Day 1, introduced tough rationing, mobilising vast numbers of women and total Govt direction of all aspects of National Life - the Germans were still worrying about drafting servants as late as '43