Ali had enough pop to stop 37 opponents including Frazier, Foreman, Lyle, Wepner, Foster, Quarry, Ellis, Bonavena, Folley, Cooper, Patterson, Liston and Archie Moore. That's a far better list than Wlad ever fought. Let alone stopped.
He needed to cheat to avoid a KO loss to LHW journeyman Henry Cooper, but I think he could be competitive with Wlad on a good night.
Next you'll be claiming Ross Puritty, Lamon Brewster and Corrie Sanders would have stopped Ali like he did Wlad