There are plenty of things that people can disagree about. But, this isn't one of them. These are obviously two different men. And I am not going to show respect to those who deny such a clear and obvious distinction. If we were talking about anything else but the JFK assassination, no one who would dream of saying that these two are the same man. By all objective and even subjective measures, these are two different men. Even their physiognamy is polar-opposite. Which would you rather run into in a blind alley at midnight? The guy on the right is a scary dude. The guy on the left looks harmless.