RE: Bear Spray More Effective than Guns..
I think it depends on the situation. If a bear has settled his mind on you as a menu item, or say a sow has identidified you as a threat to her cubs, there is little arguement from me here that pepper spray might as well be a condiment on the bear's supper table.
Conversely, in a confrontation, where the bear may only be somewhat curious as to exactly what your intentions are, I think spray can be a lifesaver for both the bear and the person. Its all situationally dependent. Let the hypothicals spin.....