There are countless large or giant breeds ‘stronger’ than an American Pit Bull Terrier. This breed was originally bred for his dog's aggression, ferocity, pain tolerance, agility, and speed- not necessarily strength. People often forget he was also bred for his affinity toward human handlers and bit inhibition (ability to control bite pressure).
Thanks in part to illegal dogfighting and our negative media, the average mother might look at today’s muscular, intimidating pit, and quickly shield her children for fear of a dog attack. We have a terribly misguided perception of these dogs, imaging some fearsome beasts of legend.
Contrary to popular belief Pit-bull bits don’t exert any kind of insanely strong bite when compared to any other avg. fully grown dog. They were once very effective combatants because they would ignore pain or injuries, tearing at their opponent until they just physically couldn’t anymore, which probably meant they were going to die.