The trouble is, as those statistics show, that the Pit bull as a breed is manifestly unsuitable as a family pet! The other 'dangerous' breeds such as the German Shepherd and Rottweiler are dangerous due to their huge size and strength. As someone said, Singh400 I think, if those breeds are trained and treated properly, and of course treated with the caution you should use with any animal, you won't get problems. The Pit bull and the various smaller cross breeds with bull terriers are, as they guy states in that report, unpredictable in the extreme, violent by nature, and I would never, no matter how well one has been 'trained' leave one with only an elderly person to watch it, and a small child.
They are, as someone else said, bought for one reason - machismo. Just listen to, and check out, the majority of the owners............

In our area they are a

menace. If your dog is going to be attacked by another without warning you could lay the lottery winnings on it it will be a bull terrier.