First of all, dude who looks like a shota=actual child.
Second,I can only speak for myself but I like straight shota not because i'm into children or weird shit,i'm a grown ass man but one of my biggest fetishes is all the times I encountered hot women as a kid (teachers, mothers friends etc) and I always put my self in the position of the child, i'm not turned on by the"shota" himself if that makes sense.
Loli to me, is just weird. A grown man liking Loli in my opinion, is someone who likes the look of underage girls, is attracted to underage girls but is obviously not fucked up enough to actualyl break the law and watch pedo shit, so he goes the legal route of loli porn.
Mods maybe see the distinction but i'm not even sure you're correct. I've seen a lot of 3D loli porn on here and a lot of shota is banned. It depends more on if it's outright stated (without a 3rd party patch) that the person is a child in the game or if the game comes with the standard disclaimer of "le everyone in this game, including the baby with a diaper is actually 18+" loophole.