I think that some way, some how, there would be a way for Virgin Sou to misunderstand even that. The Chad Sou universe is for coomers, the Virgin Sou universe is comedy with a touch of ero.I don't think it's that big, since they would behave the exact same if a small circumstance was changed.
Virgin Sou would behave the exact same as Chad Sou if he realized what kind of world and morals are there. The R-15 version of Sou has to keep him stupid to keep up the comedy.
Naruto was resentful of the village for his bad treatment which is why he vandalized and acted a fool. The comparison is completely different. We're talking core personality traits here.
I think it's very strange that you view R-15 Sou as such a different character from R-18 Sou personally... They're literally the same. If in the R-15 version, one of the girls just got naked and said, "let's fuck" you think he wouldn't bend her over the chair and dom her until her legs turned into jelly?
I would say they're different characters, since the driving force behind their actions is altered.