Moetan is actually a very clever and enjoyable series, one that caters heavily towards loli, of course. It is doesn't have to pretend to be DEEP or anything. You take it for what it is.
Kodomo no Jikan has some kinds of service that Moetan just does not. It is much more pedo. Rin is not "moe," she is just extremely hypersexual and gives water fountains fellatio. I don't feel like giving Rin a big hug, ever, she is a bitch. Ink on the other hand is just AWESOME. The show is also not afraid of making fun of itself for what it is. It doesn't hide its intentions behind plot. It just fucking delivers, and I sign for it.