"Most" would refer to those parts of the USA that are still free and recognize that a dog of any breed may defend its property against the uninvited. As a citizen of a free state I refuse to accept the laws of the UK, Australia, Canada, NJ, NY, IL, CA, or similar as to what is right and just. I use logic and reason for that.
I'm not saying that I feel the pit bull owners did the right thing, just that I don't think they legally or morally should have an obligation to compensate you for the attack. Now as a good neighbor they should, but those are not as common as they used to be.