That's not true about bioware type games, matter of fact, it's never simple to figure out what is good and evil sometimes.
A game like Infamous is a straight good or evil type game that leans toward's Catherine's good/evil selections.
What I said was a little unclear, so I'll put it a different way.
What I enjoy about Catherine is that in order to max out your good meter, you have to be bad to someone. When I said bioware-type games, I just meant games with morality meters. Usually, you're a hero, and you do heroic things to be good and evil things to be bad. In Catherine, if you want to max out your good meter, you have to be bad to Catherine. This is hard to do for me, and ends up leading to me making more realistic choices for both Catherine and Katherine text messages.
In addition, you also have the questions at the end of a section of climbing where it isn't entirely clear whether a choice is good or bad, whereas in other games, usually the top dialogue option is the one to go with.