You don't need powers to be a hero. Bruce has seen the good in men who are less powerful than even him. People like Gordon who fight for a system that's been corrupted, that want to try to make things better from the inside. He's just a rich kid with issues who doesn't know how else to function.
As it is he finds himself almost restless here. He doesn't have his usual resources -- or his usual sources of trouble to go after either. It's discomforting. Without the mission Bruce has little purpose to his life.
"A good liar knows how to control that, you know." Not that he's lying currently, but it is something he's learned how to do in his years of training and learning different disciplines. Controlling your own heart rate, your breathing, your ability to lie so well it feels like the truth.