Not to sidetrack things, but Manning was not a civilian, and thus does not enjoy the same freedoms under the law as a civilian.
So comparing a civilian's (Mcafee's) fate with that of a non-civilian is apples and oranges.
Military justice is not the same as civilian justice -one's rights are curtailed. Thst's not to say your assertion is incorrect, rather, it might give the impression one might have rights akin to that a civilian --that, I understand, would be incorrect.
That's true, but all humans have the same human rights and he's a human, so the law is largely irrelevant in any discussion regarding ethics and democratic ideals.