Purely anecdotal - one of my fishing partners has a pitbull - a big pitbull - damn thing is a big soft lunatic - every time I go round, she goes nuts - running round the house like a mad thing, grabbing my hand, trousers, feet etc - but she's never even come close to biting me. His family has 2 younger kids (8 and 6) and neither of them have been bitten either.
He complains when she goes mad with me there, apparently its only me she is that way around, but whilst that dog is in banzai mode, she's never even come close to worrying me or him, or, more importantly, his children (even seen the youngest try and ride her round the house - dog just looks at us as if to say "see what I have to put up with".
As I said, a purely anecdotal description of my friends hound - softest dog I know, biggest bark I know, and its big enough to knock me off me feet anytime it likes.
Wurzel