>>19019033so I had a theory about that. So far we think of the sins as just incarnations of the immorality that they represent. However look at the reveals so far, Asmodeus is lust but has more of an anger issue it seems (see s2 episode 6), Beelzebub is gluttony but seems to have a lust problem (see s1 episode 8 around 7 min), Mammon is greed but seems to have a gluttony issue.
Perhaps their is more to the sins than our expectation of just maxed out greed or lust.