This!!I see what you are getting at but Juels is the only person in the movie who not only lives without any major harm coming to him, he also is the ONLY main person in the story to live with his dignity intact, think clearly through the entire film and never once come under any sort of physical duress.
Juels is the real hero of the film, he isn't a deus ex machina like the wolf, but he plays the part of the seer, being able to clearly assess every situation he's put into and not only come away with minimal incident (of his doing) but also does his best to make others think clearly. (Warning Vincent of Mia, Saying they should have shotguns, having the spot to go to to clean the car, talking dude down in the stick up ect.)
Juels comes through in EVERY story arc he is in.
Fact is, despite being a killer..He was the only voice of reason and only one with emotion and saw the error of his ways, and was about doing something more meaningful with his life.