The 55-year-old trainer said that his Red Devils counterpart would struggle to succeed in the Brazilian league as coaches there are under threat right after a negative result
The Premier League champions' 1-0 win over Sunderland at Old Trafford on Saturday had a special feeling attached to it as it marked Ferguson's quarter of a century in charge of the club.
Several football personalities have heaped praise on the Scottish tactician's achievement, but Muricy Ramalho, who has been in charge of Santos since April, ironically remarked that the 69-year-old would never be this successful in Brazil.
"Ferguson has only been at United for this long because he works in England," he told Globoesporte. "Here, in Brazil, things are different.
"If he arrives at a club in Brazil today and they draw on Saturday, his place is under threat already.
"Arsene Wenger has been at Arsenal for a long time, too, with his good-looking suit, his hair all done, but he does not win anything."