You stats are flawed....Here is why, First: There are WAY more Pit Bulls in Urban areas. (site of most fatal attacks) Because of the sheer number of them, of course they would account for more fatalities. Please don't quote AKC numbers, if you drive through the inner cities you will find Pit Bulls out number the next closest (Rotts) by at least 5 to 1 if not more.
Let me give you an example of what I am saying. If there are 1000 Pit Bulls in a city and 100 Chows in the same city you would assume that Pit Bulls should have 10times as many attacks right? To really find out how dangerous a dog is you must take its total number into consideration. Pit Bulls often account for far fewer attacks if you consider the attacks/population ratio.
Second: Another flaw is that many dogs are missed labeled as "Pitbulls". Over 20 breeds are often misidentified as Pit Bulls.
See link
http://www.pitbullsontheweb.com/petbull/findpit.html
Because some Labs are so stocky they have even mistaken Labs as Pit Bulls.
Who are the people who are calling the dog a Pit Bull? A Vet...No Breeder? No Hysterical Cat owner? Yep Reporter looking for Headlines? yep Over Worked Under informed Cop? Yep....You get the idea.