you only need to look at what they have been bred for to realise what potential they have - the bullmastiff mentioned above is a perfect example
EBT isnt a 'large' dog by any stretch of the imagination but the power of any bull bread is potentially dangerous
The ignorance here is astounding
Mastiff's are different from the two Bull breeds you talk of, Staffies and EBT are very people friendly, they were bred for pit fighting not people biting. Mastiffs were pretty much bred to intimidate people but most are very placid. German Shepards, Dobbie's and Rotwielers are potentially much bigger threats to people as they were bred to protect people.
Any dog is dangerous, my lurcher could kill a small child in the blink of an eye, but Staffies or EBT are not any greater threat to people.