Agreed, that statement completely ignores the qualitative difference between dog bites. I was once bitten by some sort of yellow lab or golden retriever; it bit hard, but it let go before the pain signals even reached my brain. On the other hand, when pitbulls bite they tend to clamp down and shake, like they're trying to tear you apart. Likelihood of a bite is the wrong statistic, likelihood of a mauling is what really matters.