I still havent seen anything that answers my question.
unless we're treating Superman like a comolete idiot there is now way he wont see or detect Consantine with his senses and because he knows what he is capable of prevent him from saying a word.
Does anyone here doubt that Supes can move fast en I ugh to take John out before he speaks. I'm not talking about how mm often he uses it in story for plot, but capability. Does anyine question that he was nows what john is capable of? The answer to both is yes. Therefore without prep John cant take a majority, its that simple.
Con John is a favorite character of mine from Vertigo, I'm the first to admit the Nu52 powered up version shits me more than a little because it wasnt necessary, but there is no way he can beat Supes in an impromptu encounter because of senses and speed. With prep, another story.