Plus, the first part of the game builds up Delita as a guy you feel bad for because of all he experienced and you root for to overcome the odds, and you get a lot of his backstory so you understand why he is the way he is.
Algus is a jerk because he was born to be a jerk. The game never gives you an opportunity to identify with him or feel bad for him, really (Well, maybe one scene, but it's brief). You don't get to see him build up to it. He's already there.
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