I too think banning a breed is wrong.

While working at a vet hospital for 8 months I've been bitten by only smaller sized dogs, not saying I don't like small dogs, because I own two small dogs. Out of all the dogs I've handled, I've been nipped/bitten on the hand or arm by dogs around the 20lb and under range.

I was even bit by a mini. dachshund once, but I still adore the breed. I love pits and all the ones I've met were great dogs and I've met quite a few of them.

Also, of all the dogs that came in for rabies quarantine for biting someone, I only remember about 3 out of about every 10 being large breeds. That's an approximate guess from my observations at that clinic.