Of course the stories we read are usually pit bulls, because that's where the hype is, and media follows hype. That doesn't mean they are the ones causing most of these cases, or that they are dangerous dogs when bred and raised/handled appropriately. Attcks by other breeds are either not reported on, or don't get the breed in the article - at least not the title. The wording is very different in those cases as well.
Also, I like how the author throws out stats like pits making up 3% of the dog population. Given how people categorize "pits," I'd say that is a HUGE underestimate. I also like how a man with no real education in dogs is cited to back up the main point of the article. Nice.