It seems to me that Pitbull bites are different than other dog bites.
Other dogs are known to be more likely to bite than a Pitbulls. But when Pitbulls do bite it seems like their intent is to do real damage rather than issue some sort of warning.
I had a Pitbull when I was 14/15. Never ever would I own one again. And I am 100% on the wagon to eliminate all of them.