I think all of us commenting have different age ranges in our heads for 'older men' and 'younger women'. Anyhow the OP as far as I understand talks about very young women - 'girls who have recently exited puberty', and the discussion in the comments talking about 'power' and 'stature' seems to suggest men who are already fairly well established in their careers - at least the early thirties?

That's anywhere from a 15-20 year age gap. Not a whole lot more common than older woman-younger men pairings.