I watched this video last night on Netflix. If you can check it out it was very interesting.

Battle of Britain, the Real Story.

It has some very interesting comparisons of both side including some actual pilot comments at the time.

It seems that captured German pilots were housed in a building and bugged before they were taken to camps. Their conversations were used to asses the state of the Luftwaffe at the time.

Very interesting stuff. If you get a chance, check it out.

http://www.bbc.co.uk/programmes/p00b6bgc

This is a link to a bbc clip.

There are some interesting airplane comparisons as well as strategic comparisons.