I used to think the same thing, but (surprising to absofuckinglutely nobody) many pepper spray manufacturers can be quite deceiving in their advertising practices.
This is driving me nuts. It's 3:00 AM and I went out to my truck to read the label on my Bear Spray. First, it's not Sabre Brand. It's Mace Brand. And according to the article, Sabre says they are the only ones you can trust. So then I read the ingredients again, and it says, "Includes 1.1% Capsaicin and .9% related Capsaicins," making 2% which is also stated in the ingredients, and I have no idea what related Capsaicins are, in addition to the fact that I don't trust any manufacturer to honestly list their ingredients anyway. According to your article 1.1% Capsaicin puts Mace Brand in the bear spray category level III. What I wanted to buy was Counter Assault Brand (the one that I got a terrifying wiff of in Montana), but that doesn't seem to be available around here. In fact Mace Brand was all that I could find. I saw Counter Assault, Sabre, and Mace listed at amazon, where I try not to shop if at all possible. Saber is the cheapest one there. What brand do you use? Now I'm going to bed and dream about bears. Hopefully not.