HOF'er Mark Henry says if he was John Cena, he'd absolutely wrestle in WWE's "Crown Jewel" in Saudi Arabia -- despite journalist Jamal Khashoggi's murder -- 'cause it's his job to perform.
TMZ Sports talked to the WWE legend about the fallout from the company's decision to NOT cancel the event ... and Cena's reported refusal to participate.
"I wouldn't ever say that person is making the wrong decision. I'd say, that's not the decision I'd make. I would stand by my guns and do what's right for business.