>>101052426The inherent difference there is that manga that's aimed at children (even peripherally) is immediately accessible to children in ways that superhero comics are not. Buying superhero comics can often feel like walking through a minefield of sexbewbsass, and even series that are tame and are supposed to have broad appeal like (Carol as) Ms. Marvel and Teen Emma Frost get stuck with Greg Horn covers that might as well be porn. Manga might be infamous for T&A, but it doesn't work to deter readers in the same way.
I think it's also worth noting that even though a couple of shonen comics can go overboard on the fanservice, it's not at the risk of pushing female readers out of the manga market entirely because of the strength of the shojo genre. Nor does fanservice define manga; you'll always find popular stuff without it like Fullmetal Alchemist, and other series mature past any use of it, like Naruto. It's also really rare to see a popular shonen manga with a tankobon cover worse than the Emma Frost covers. (Again, *Greg Horn* drew covers for a book aimed at a younger audience.)
I think that also, when it comes to female superheroes in general, a lot of people who care about these characters for more than just an arrangement of body parts got sick of seeing them transformed in to T&A showcases over the years. If a character is old enough to have existed before 1985, they definitely weren't always like that. Carol's old costume wasn't always used as a launchpad for porny covers. Black Widow's costume had a functioning zipper for decades until it didn't all of a sudden. Wonder Woman was respected with her own deep history before Deodato turned her into a thong model. Missing the point of characters in that way turns off older fans, too.
