If I remember correctly, Atlus' Aram Jabbari explains here [http://www.giantbomb.com/quick-look-ex-catherine/17-4137/] that the "morality" meter is less jerk vs. nice guy and more chaos vs. order. I'd assume that there is a bit of overlap and that which of those extremes is "good" and which is "bad" depends on your attitude to relationships.
That video also shows and explains a bit of the gameplay and changes to the US-version of the game, for those who are interested.
That video also shows and explains a bit of the gameplay and changes to the US-version of the game, for those who are interested.