Both men were recognised at the Globe Soccer Awards this week, with Mendes named Agent of the Year and Ronaldo Player of the Year.
Mendes said of his star client: "He cannot be compared to anyone else, for me he remains a species in his own right.
"Since he was over 30, he has done things that others have never done. Younger children have been set an example. He has already scored 9 goals in Italy, the championship where it is more difficult to score.
"With Juventus, he wants to win so much, especially since he will soon be 35, but he can really play as long as he wants."