Pete - just look at sport??? Good grief man, how long has it taken for women to be allowed to play sports on a professional level? If they had been playing as long as men there'd be a true contest but you can't use that as a basis for your argument since there isn't really a comparison, that's apples and oranges. Sure, men have a more physically strong frame, what they do with it is something else. Take, for example, every swordfight you've read about...how often do the combatants think about how to use their personal strengths against their opponent, they weigh physical strength, speed, timing, intelligence and all manner of things
most of which don't rely upon the actual strength of the opponent. So your argument doesn't wash.
Before that you said that the concept of a maternal succession was too much to suspend our belief...are you just kidding or what? Maternal succession is more outlandish than the Volgons, a singing sword, dragons that talk, people who can change themselves into birds?? Don't be silly. If an idea works in a book (and it must since you explained that the author gave a plausible construction for it) then it isn't too 'out there'. Nothing is too much really, as long as the author makes it work for their story.
All that aside, your original question was about maternal succession. I don't see a problem with it. As another poster said, it isn't about strength of body, it is about strength of character. Ghandi had followers in the millions. If he told them they needed to fight for their rights, do you think they would? Of course they would, they believed in him and the truths he was opening their minds to. Could I win a fight with Ghandi? Absolutely (discounting the fact that I would never fight him
), I could probably take him out without breaking a sweat.
So Pete, I just think that you are a victim of your upbringing.