That comment about McCain was from a staffer, not a top official, and more importantly it was said in a closed-door meeting, not in a public press meeting or social media. It never would have been heard if some "amonymous source" hadn't leaked it. (Which is to say, if someone in Obama or Hillary's staff had done the exact same thing, it never would have gotten media coverage.)
Also saying "He's dying anyway" is basically saying not to be concerned about responding to McCain. That's not nearly the same thing as fantasizing about killing him, or wishing he was dead, as is the recurrent sentiment among Obama and Hillary officials, and grassroots liberal fascists.
Remember also that a Democrat strategist and a few other Democrats on social media bemoaned that Rep. Scalise and other Republicans weren't actually killed in the baseball field attack! On so many levels, there is just no comparison.
