I'm not entirely sure who this Ben Campbell specifically is in the 'Ben Campbell 21 True Story' without more context. It could be an individual involved in an event or a story that's not widely known to me.
Ben Hur is not a factual account. It's a piece of fiction that has captured the imagination of many. The story was crafted to entertain and tell a compelling narrative rather than being based on real events.
Whether Ben Carson's story is true is a complex question. It involves looking at multiple factors such as the reliability of the sources reporting it, his own statements, and independent verification. In some cases, it might be a combination of truth and exaggeration.