Duke has better lawyers, home venue, and every reason to fight it tooth and nail. Also, they will be suing Mensah, not Miami, and Duke has the option NOT to let Miami or Mensah buy out his contract as they own his NIL rights and all revenue share money must go through Duke. In otherwords, Miami has no mechanism to legally pay him without serious scrutiny.
That said, Duke kind of deserves this for doing the exact same thing to Tulane. Tulane received zero compensation and Mensah sabotaged the team for the final weeks of Tulane's season (when they were fighting for a playoff spot and in CCG) when he had secretly negotiated with Duke outside of the portal. He then proceeded to ghost his teammates, and coaches and emptied out his locker without telling anyone.
F'k all parties involved. They are all trash.