'Iron Mike' was asked about the two boxing legends during '10 Questions with Mike Tyson' back in 2013 and had to choose which man caught his eye the most.
The former world champion asked "Out of the big time fighters right now?" before immediately following up with: "Pacquiao looked sensational in his last fight (against Brandon Rios)."
"No fighter, in the years I have witnessed, looked more sensational than Pacquiao looked the other night," Tyson continued. "Name a fighter that looked more sensational than Pacquiao the other night."
Pacquiao had defeated Rios to claim the WBO International Welterweight a month before Tyson sat down with Sports Nation.
Show co-host Marcellus Wiley was quick to argue that undefeated Mayweather deserved a mention before Tyson gave his feelings on the 'Money' vs 'Pacman' debate.
"That's shows you're a neophyte in boxing. You don't know much about boxing," the 54-year-old quipped back. "No one said who was better. I said there's nobody in boxing who looked as sensational as Pacquiao looked against Rios."
He then goes on to further praise the performance and explains: "It was masterful; the side movements. He threw a lot of punches and Rios couldn't get a punch off.
"It was brilliant. It was really brilliant."
Mayweather's 50-0 record speaks for itself but the 43-year-old's brash attitude earned him a lot of criticism in his career.
The Michigan-native has even labelled himself as a better boxer than Muhammad Ali - something Tyson once argued against passionately.
"He's very delusional," Tyson begun. "Listen, if he was anywhere near that realm of great as Muhammad Ali, he'd be able to take his kids to school by himself.
"OK, he can't take his kids to school by himself, and he's talking about he's great?
"Greatness is not guarding yourself from the people. 'It's being accepted by the people.
"He can't take his kids alone to school by himself. He's a little scared man. He's a very small, scared man."
Tyson has previously had beef with Mayweather and when asked about a potential street fight with him in his prime, he told GQ: "[I would] kick Floyd's a**e... there wouldn't even be no match."
Featured Image Credit: ESPN & PA Images
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