This doesn't seem credible at all. I don't think Pele would ever say "stupid Americans", considering the time and effort he put in America. Also, I always thought Ronaldinho name was not actually Gaucho. Gaucho is a nickname for Brazilians who come from the south.... it's just anouther nickname for him. It would be the equivalent of someone from Indiana to be named Mike Hoosier, or someone from Oklahoma be Lisa Okie. I could be wrong, but Ronaldinho was not born Ronaldo Gaucho.
Gaucho's in Brazil are people born in the State of Rio Grande do Sul. The southernmost State in Brazil. IE Cariocas are from Rio.....Paulistas from Sao Paulo and Mineiros from Minas Gerais.
I'm not sure if ESPN always does this but on their gamecast live of el classico on the team lineups the brazilians all have their full names written. Ronaldinho's can't even fit on the page.