For Duran to have any chance it would have to be Montreal Duran that shows up. I don't think there's much footage of Robinson in his prime welterweight days but apparently he was phenomenal. Duran's prime was at lightweight. People forget that fact.
Hard to say what Robinson was like at WW, but the mythology is that he was a better WW than MW, that thought alone is unfathomable. Robinson
TBE is RJJ IMO but yeah welterweight SRR is arguably TBE would UD Duran. Duran as a LW is one of the TBE's, arguably TBE.