I have to agree that the prudent thing to do when you feel uneasy about a situation is to retreat. That being said, I can't fault you for your decision. You compared your capbilities to that of the other person. It sounded to me like you had enough advantages over him to continue on with caution. When it comes to defensive weapons, a gun is first choice. But if I couldn't carry a gun, a giant schnauser is a great second choice. I won't argue with those that said leave and call police. But I think you did OK. I'm glad things worked out.