All very good points.
Texas once had laws which differentiated "threat of deadly force" from "use of deadly force", and there were conditions where you could threaten but not use deadly force. This was probably a very bad idea, but it reflects this guy's likely thinking. "If I show him a gun, he might leave me alone." But I would postulate that this action is just as likely to escalate the situation rather than diffuse it.
And who doesn't know NJ has very restrictive gun laws? I think every Texas knows that (whether it is true of not.)