Do you mean quantity or quality? Quantity is joe louis no questions asked. Quality? Do you mean names beat or how they beat them? Lewis has Holyfield and Tua and Tyson but only one of those guys were prime. Foreman has three atg wins but nothing else. Tyson didn't beat a real great heavyweight but he annhilated a division. **** Jeffries owned heavyweight as did Marciano. So I'll say Louis.
Pacquiao has beat- Barrera x2, Marquez x2 (1 draw and a loss), Morales 2 out of 3, Bradley 2 out of 3 (should have been 3 out of 3), DeLaHoya, Hatton, Cotto, Clottey, Margarito, Rios, Algieri, and plenty of other good fighters.
Robinson hands down. He beat Angotti, Armstrong, Lamotta, Fullmer, Basilio, Graziano, Olson, D.ykes, Gavilan, Turpin, and PLENTY of other great fighters. He beat most of these guys multiple times AND past his prime.
This is a good call. Greb beat fourteen lineal champions, including seven light heavyweight champions, and one heavyweight champion. For a guy who was basically a middleweight, that is hard to beat.