You are sort of making my point here though. The problem with pitbulls is that people think they are just getting a dog like any other dog and don't respect the pitbull's unique genetic makeup and disposition. You didn't like my comparison to a tiger...but they are much closer to a tiger than they are to a cocker spaniel. And that is very, very dangerous if it is not treated with tremendous respect...which as you say, a LOT of people do not do.
The further problem is that, even people who are very much doing everything the "right" way can have a disaster with these dogs. Sometimes it is the toddler that trips and falls toward them, sometimes it is kids running across their yard or a delivery person...there are all kinds of examples of well cared for, well trained pitbulls suddenly doing something completely out of character and someone getting very seriously injured or killed as a result. Not one or two anecdotal stories...hundreds of incidents in the US over the last decade. And thousands more near-misses and less lethal attacks that don't get reported.
That is why having a pitbull makes you uninsurable in some instances and why many localities around the world ban or restrict them. It isn't because of an unearned reputation or being misunderstood. It is because they are statistically far and away more likely to kill or maim someone vs other domesticated dogs. Risk is made up of likelihood and severity. For a pitbull, the likelihood of an attack is already higher, and the potential severity is catastrophic. Just not worth it IMO.