hmmm...he's previously stated there will be a tutorial included in 0.2.0, so hopefully that will clear things up a bit. But in regard to the destiny score...that's individual for each person and is a relation back to the MC. So, if Melissa has a destiny score of -20, then she will look down on the MC. If her love score is high enough, though, EON stated the love score can provide a "bridge" for at least some of the negative destiny. But at the same time another character could have a positive destiny score (via interactions, gifts, etc), so theoretically that person will not look down on the MC. If they also have high enough love score then I take that as likely to have a non-humiliating, positive relationship.
Low destiny = character looks down on the MC
High destiny = character looks up to the MC
Powerscore (MC) = how good or bad the MC is. (Morals? Don't know how good or bad is defined.)
Corruption = Not how far out of the character's comfort zone one behaves; rather, the comfort zone itself has changed resulting in a new normative behavior.
Love (quoting EON):
"Love is closer to what you described in the corruption part. If someone is normally very loyal, kind. But she has been corrupted enough and sees you as a beta that absolutely needs and wants to get humiliated. Love will bridge that. Same the other way around. The stats sometimes have other effects. If as example someone would win the lottery, it would depend on love how much they split with you."