My opinion. Some pit bulls are valuable friendly pets, good around children. Some are vicious brutes dangerous to anyone. Some horses are great around children, gentle and careful. Others are dangerous. Some Silkie chickens are as sweet and nice as can be, some are downright brutes to other chickens or to people.
My opinion is that some RIR's are sweet, calm, and docile. Some are pretty mean and aggressive. You are dealing with living animals, they are all different.
Well put.