Apples and oranges.
Manning was betraying his country because of some homosexual delusion.
Snowden was defending the Constitution in the only way open to him. When the government, which is supposed to be following and defending the Constitution is betraying it, then where do you go? Snowden did what he had to do. He's a hero in my eyes.
If he had given the stuff to Mark Levin or Rush I would agree. Giving it to the chi-coms and Russians is not the way.
Manning was in no way qualified for the job he got. He was a post turtle.