you know I have absolutely nothing to add. You saw it right, and posted it right.
Its really hard to have great depth in both tours in years when most of the guys are drafted, and the women are taking whatever war related duties, that men can't. Or in times like the great depression, when entire continents have lost their economic base. That leaves huge holes in tennis history where there are three or four superstars - and then nothing.
Tennis history is interconnected with global history.