Clearly missing my point. I'm assuming this video is the same news article I turned up searching for it. If it is, then the bear charged his uncle, who carried a rifle, knocking him down and mauling him before he could do anything. The boy opens up fire with his shotgun until the bear in down, and the uncle finishes the bear with the rifle.
If the uncle was alone in bear country with his gun and some spray, we see how this would have most likely ended. It was the safety of numbers in this case that prevented death. Boy alone with shotgun, dead. Uncle alone with rifle, dead.
Bears are mean and fast and you can puff up your chest and feel strong with your shotgun or revolver or can of spray, but that bear is still the alpha in this exchange and it takes the right circumstances to come out of it ok. It's not just having a gun or using a gun against the bear that decides the outcome.