Dont compare rotts to pits. Rotts are nowhere near as randomly violent as pits.
here's the thing that most pit owners are arguing, it's not random. you will not find experts to say they are born aggressive or randomly attack
they expensive if you want a pure one from a great line and breeder. and you need to take the steps to socialize it early. get it formal training. give it space. run out it's energy. etc etc. things you should do with any dog, but it matters more because they are more likely to kill if they bite
why its not random is it's always some dummy with a $300 "pitt", who crates it all day long in an apt, hits it cause "you gotta be tough with them", and then lets it free roam and do what it wants. they aren't mentally retarded and just snap at random times and events. they're like bad kids. they grow up to be bad ass adults if they don't learn from jump
and this is coming from someone who always loved them and still won't get one till my son is a teenager. because i know better than get one, if i'm not ready to properly train him and put in the work.