What I mean is that the JL are all basically superheroes and do the same thing. Fight crime.
I'm not saying that the series on the left are bad/worse but all of DC's characters have similar themes and traits. Whereas the right ones are a bit more spread out over different genres.
Sailor Moon, for example, is a shojo character and designed for little girls. Harlock is a space opera and Lupin is more of a modern day telling of Robin hood (if that makes sense).
Really I'm not saying comic book characters aren't diverse it's just the way you worded it makes it sound like you're oversimplifying manga to a stupid amount when the fact remains that comic books are just plain more popular in Japan than America and therefore have a bigger and more diverse market.
It's a fact, a sad fact, but a fact.