I couldn't disagree more. Head to head ability, is 100% speculative, when you compare fighters from different eras. At least when you compare their resumes, you have some sort of data to constrain it.
Very few disagree that Robinson is the greatest performer in the sport- the few that don’t have different angles rather then going against the mainstream opinion for the sake of it.
Heard he dodged the Murders row did ya? Someone who did more then BOXREC him would know that already.
Not exactly, because you can never ultimately prove the second proposition. You might consider it to be highly likely, but you can never prove it.