Anyway, from my understanding, medications for treating PTSD are less effective than medications for other mental disorders. I'm waiting for the day that PTSD medications catch up, because therapeutic treatment for PTSD is currently centered on reducing discomfort, without much hope for remission, which feels like a dim outlook.
They mean exposure is much better than doing nothing, a bit better than “non-trauma-focused comparators“ and on par or negligibly better then the most effective approaches, for example, exposure is often used as a part of a larger therapy like trauma focused CBT
In some cases there's damage to the hippocampus, which doesn't get better. I've had 40 years to make peace with the crappy accident I was in. But the things like an exaggerated startle reflex, an aversion to chaotic or unplanned sounds and other triggers remain. I always carry a pair of noise-cancelling headphones if I think I might need to be in a noisy environment.