If you don't get a lot of reviews, I'm sure it has a lot more to do with the size of your chosen fandom than with the quality of your writing. Even people I know who are into anime (not that I know terribly many) tend to say, "INITIAL D? Is that the one about cars?" And the fact that your stories are mostly M/M probably cuts pretty deeply into even that group.
My PHINEAS AND FERB stories seem to get a decent number of reviews, although a substantial minority fall into the categories of "Why didn't you [make the story go the way I wanted it to go]?" or "When are you going write more about [the pairing I like]?" I've also noticed that, as far as I can tell, women never review my stories, but I suspect that's a content issue--there are probably only so many women who want to read stories in which teen or preteen cartoon characters have explicit sex, even if there's romance involved.