To be able to get the same treatment as Manning, Snowden would first have to get to the US, go through a trial, get convicted, serve a couple of years in prison

To be able to get the same treatment as Manning, Snowden would first have to get to the US, go through a trial, get convicted, serve a couple of years in prison, and then get his sentence commuted. Snowden thinks (and I personally agree) that the second step (of him going through a trial) would not work, because he wouldn't get a fair trial, and I agree with him. And, as was pointed out to you, Manning hasn't been cleared of claims that she made. She still made a crime according the court and was still convicted of that crime. It's just that her punishment got reduced and she is now free. It's nowhere even near the similar situation. Snowden's case is basically in the same stage where Manning's case was when she leaked the documents, so somewhere around 2011. Manning pleaded guilty to the charges in court in early 2013. Snowden still didn't go through that process.