The former Barcelona star believes Ronaldo is frustrated playing at the same time as Messi and is backing Neymar to become the world's best player.
Ronaldo and Messi are once again among the favorites for the Ballon d'Or thanks to their exceptional form in the past year, and both scooped awards at the annual LFP gala Monday as La Liga's finest players of 2012-13 were honored.
However, Messi - who picked up the LFP player of the year prize for the fifth successive season - has beaten Ronaldo to the last four Ballons d'Or awards, and his former teammate Ronaldinho believes this is the cause of genuine frustration for the Real Madrid sensation.
"Cristiano Ronaldo's rage is to live in the same era as Messi," he told the TV program Bem, Amigos!
Ronaldinho went on to say that compatriot Neymar will become the world's best player, suggesting Messi will help him develop in much the same way he aided the Argentine.
"Deco, Sylvinho and I always gave passes to Leo so he could adapt as soon as possible. He will do the same for Neymar," he said. "He has it all and he will become the best player in the world in the coming years, but only when Messi is not at his peak."
Ronaldinho is currently preparing for the Club World Cup with Copa Libertadores champion Atletico Mineiro, and the Brazil international believes his side could have the advantage over Champions League holder Bayern Munich.
"We arrive on equal terms, in order to reach the final. We won't change anything. It's the way we play," he said. "Players in Europe don't follow Brazilian football and that can be an advantage for us."
Ronaldinho did, however, point to the meticulous preparations of Bayern coach Pep Guardiola, claiming the Spaniard's knowledge of the Brazilian game will be important to his side's chances.
"The Bayern coach knows a lot about football in Brazil. He brought several players from here and he will bring videos and information in abundance," he said.