Sticking around hasn't helped Manning any.
I think you're looking at "consequences" as a very black and white thing. Snowden is facing the consequences for his actions -- he's exiled from his country and may never be able to return. He's already sacrificed so much to do the right thing. Sticking around to be persecuted wouldn't help out any. He took the risk of being tortured, imprisoned, and even executed. Isn't that enough? That's the most we ask of our soldiers and then we declare them heroes -- we ask that they risk their lives. We ask that they risk sacrifice, not that they do sacrifice. Kamikaze pilots and suicide bombers have no place in the defense of our country. Why should the whistleblower be so self-sacrificial? Why is he not a hero for risking his life when that's the standard of valor we place upon ourselves?