Pit bulls are simply much. much stronger, especially in the jaws, than most other dogs.
Pekes are probably the NASTIEST, most territorial dogs around. But it hard for one of them to rip your face off. They aren't very big.
Smaller dog, smaller damage.
Plus, pitties have a rep. Maybe deserved, maybe not. Dalmatians are one of the hardest breeds to train and control. Every time Disney releases a movie about them, little kids want one for a pet, but when they actually GET one, and find out what a handful they are ...................... but they are viewed as cuddly and cute.