Jones would stay in it for a little while due to his speed, but the extra weight would wear him down and then George would catch him.
Roy would prove a tricky opponent for as long as the fight lasted. This would be about two minutes !!
Jones is given way too much respect at HW due to his win over the hand picked Ruiz. Everyone knew that Roy was going to win (I did anyway) due to the styilistic advantages of Jones over Ruiz. He would'nt have such advantages over Foreman. It might be tricky for a little while but sooner or later Roy would taste George's power and when he does it's goodnight.