I honestly think vs most all of the All-Time greats beat him fairly easy.

Ali, Marciano, Louis, Foreman, Frazier, Liston, Dempsey, Lewis, Holyfield

Guys like Walcott and Charles might get past him too if only for the fact I think Tyson just didn't have the heart to beat them.

Shavers, Norton, Patterson, Quarry, etc...guys that were on the edge of being great would have got their asses kicked though