Tyson easily and it's not even close. Tyson will probably go down as one of, if not the most talked about fighter of all time.
Tyson beyond a doubt at least in the english speaking world. ODH may have made a bigger splash in the Spanish community. But I disagree that Tyson is the biggest name of all time, I'd give that to Ali.
tyson easily, the youngest undisputed heavyweight lineal champ in history. that easily ranks higher than oscar whose biggest win was against vargas and if i'm not mistaken was never the lineal or undisputed champ in the divisions he fought in.
