Exactly. Some traumatic events are universally traumatic, in more than 85% of the cases. I'm referring to torture, gang rape, and certain combat experiences, especially barbaric ones. Even when a person displays very few pre-traumatic factors and maintenance factors, the level of trauma is significant, even crucial.
Obviously, the higher the number of factors in each category, the longer and more severe the convalescence is, and the more refractory a person will be to therapy, so on and so forth.