[Newt has not missed the muscles. It'd be hard to ignore that Magnus is basically the Hulk and could probably punch anyone here into dust. But.]

You're really that confident that you could take out a Reaper if one tried to kill you? They get, like, special weapons and stuff. And they get to set the stage for whatever they want to do to you. Plus, who knows how these things actually go down? The whole group could come for you at once. They have a definite advantage, dude.