#4 The record stays tied
With Cena having bagged a role in one of the biggest movie franchises of all time, the chances of him coming back for even a short-lived championship run are looking bleak. These movies always make good money, no matter how they fare in terms of reviews. If this appearance leads to bigger and better things for Cena in Hollywood, it could very well mean that Ric Flair's record will remain tied with that of Cena's.
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Of course, Cena could come back for one-off appearances in WWE, but if his movie career takes off unexpectedly, he might never get enough time to have a full-fledged reign with the WWE Title for the sake of breaking Ric Flair's record of 16 title reigns. Cena is currently standing at 16 reigns and needs one more to create history.