It's not exactly the typical male power fantasy, but /ss/ is just as much of a male oriented fantasy as those. It's literally still about a woman being all over you, with the added elements of them desiring you despite perhaps not meeting certain manliness quotas and older women. Fuck, it's about guys still being able to attract the attention of women in positions of societal and physical power over them. And while it's not present in a lot of /co/ works, /ss/ doujins often fall into the same problem Japanese femdom works have: ie. the shotas tame them with the power of dick. Aside from that, someone once described the fetish by pointing out it enabled fantasies along the lines of traditional female roles: being wanted not because you've had to make yourself useful but just by being. It's not a power fantasy, but it's still rarely about the woman. It's still largely a fetish about the woman.
Most /ss/ stories in general focus on the boy's perspective not the woman's as well. Look at the loli content that gets posted around 4chan. Female fetishes for older men are well documented, but such content around here is still mostly about the relationship from a male perspective, not a female one. You'd probably have to go to romance novels and shoujo stories to get the actual female fantasy. I know there's some post cap that shows up every so often of a supposed female anon describing her fetish to mother her boyfriends, but I don't know much female oriented /ss/ stuff otherwise.
This isn't a critism or anything, just what I've seen of the set up around /co/ and /a/. I feel like if we're going to be tossing words like empowerment around, you need something more than "I want snu snu" to go on.