There was a Stanford study done in 2004, I have it somewhere, it was on base IQ performance. Now we can argue all day about what 'IQ' means, and whether it is demonstrates 'real' intelligence, or whether it can even be applied to chess, but thats not what I'm discussing. With the exact same test, the average for both women and men was around 100 'points.' The only difference was that the standard of deviation was much higher for men than for women. This would result in a larger number of subnormals and supernormals in the male population, which in turn, would influence chess strength, number of male GM's, and so on.
This is an interesting point, because in order to conclusively say that one group was better than the other I'd be looking for a phase shift as opposed to a larger standard deviation. If there are just as many "subnormals" as "supernormals" then on the average the original statement that men are better at chess than women is quite possibly incorrect as the impact of the "subnormals" cancels out the impact of the "supernormals" -- it certainly highlights the folly in simply comparing just the outliers.
It also occurs to me that the "subnormals" would likely not be chess players, which also highlights the selection bias of looking at just the group of chess players when making this generalizatoin with the intent of comparing chess potential. Unfortunately, chess potential is also something that's impossible to measure, especially among non-chess-players.
I'm not picking through your earlier rants point by point in order to refute them -- if you reformat them so that there's some white-space and I can actually read them without getting a headache I'd consider it.
Reb's point that there is a lower percentage of females who play chess getting to 2500 may well be true -- I'd certainly believe it, but I wouldn't go as far as to say that it's because women have a lower innate ability to play the game as you've implied. As I said before, the only thing we can show are the whats -- the whys are up for debate, and there are plenty of alternate explanations all of which are equally unprovable.