The best possible thing would be Ronaldo opening with a hat trick and Messi with a saved PK in a 1-1 draw to a defensively solid, lesser side, prompting all the pundits to say Ronaldo is the Greatest and Messi is the Worst; and then in the third game of each group, have Ronaldo with a saved PK in a 1-1 draw to a defensively solid, lesser side and Messi getting a hat trick.