I admit it is rather confusing, but I couldn't think of a better way to word it ^^;;;
The asterisks part is confusing. It sounds like it's saying the stats are for HHM, and the asterisks are used to denote EHM stats, but while Limstella has her lower stats marked with an asterisk, Fargus has his higher stats marked. Is this a mistake?
You're correct on all aspects though. Limstella uses the "super" Sage class on both Normal modes, which has a Con of 7, but uses the regular Sage class on both Hard modes. So even though her stats don't change between ENM and EHM, there is her Con difference.
Fargus is another oddity, because he's treated as a generic on EHM and thus gets ridiculous bonuses (one of the only times being a generic is useful).