Jena was truly much different from Drina, as she was more like a born ruler, add to that her strength, then it was possible that the Werewolves Clan would be ready before the Vampires.
If Tianlong Yun hadn't messed with all these things, and Jena found a way to return from Soul Land then for sure she might become the next head of the Masons, despite being a woman.
It wasn't to look down on women, but the truth was that since rates of strong men to strong women were a bit mindblowing at about 80-20 then the world of the strong was bound to be a patriarchy.
But that didn't mean that women didn't have any chance at all, as there was needed just one woman who was able to overpower all the other men, in order to give all the womenfolk a chance.
Furthermore, women were much better tacticians than men, as they always thought a matter 2 or 3 steps ahead in the least.