Pele has declared he plans to send videos of himself to the Barca superstar after learning the Argentine had never seen footage of him playing.
"If he sees the videos, he'll probably learn some things," said Romario.
"You cannot compare him with Pele. You cannot say he is the same when he has never won a World Cup.
"Messi has all the conditions to be the best, but first he has to beat (Argentinian Diego Armando) Maradona, Romario and then eventually Pele."