Why the hell does the WWE continue to say Mark Henry is the strongest man in the world?

He won a strongman contest once. That's good enough for WWE. After all, Ken Shamrock didn't compete in an MMA fight for his entire WWE tenure, yet they still referred to him as "The World's Most Dangerous Man." WWE doesn't strive for accuracy, they want a catchy, marketable name. "That guy who won a strongman contest a decade ago" isn't really the same thing.