>>101312150>what is reality
Younger girl and older guy works because girls really want to date older boys because those are more mature, dependable and it also gives them status, the guy is OK with the girl being younger because she's still a cute girl to kiss and etc. even if less developed, but easier to pick up, impress and to please, so he can get a girl who would have been out of his league otherwise (or just a girl if he has no luck with dating girls his age). There's reasons for mutual preference.
The other way around just doesn't work. A kid would of course love an older GF with big ol' boobies. But he has absolutely nothing to offer to an older girl over his older competitors. No status, no wisdom, no body. A younger kid is inferior in every single way, worse than that, a girl dating a younger kid would get teased by peers (in the boy world a younger GF is still a GF most don't have and want, unless the age gap is comical of course). There are only fringe possibilities, like a girl who's into controlling and playing with a boy could maybe consider a younger BF as an easier target, or a girl with no confidence who would go for literally anyone cute who tells her he loves her. But these are obviously rare and not a trend like the previous configuration.