It probably takes a good while for Robinson to figure him out, but once he does and is able to land i don't know if Benitez could handle Ray's power. Could be one of those matchups where a rematch is required to set things straight ala Robinson-Gavilan although Gavilan had a granite chin.
Benitez on his game would drive him nuts, but eventually Robinson is bound to break through with enough hard shots to hurt him and either take him out entirely or hurt him often enough to win rounds and consequently, the fight
Robinson would eventually break through the defense. He would break down Benitez with those brutal bodyshots inside and that would bring down the hands and slow down el Radar. Ray's uppercut-hook combinations were a sight to behold and he threw them with chilling power. Robinson KO 8
That depends... He was only really outboxed past-prime as a middleweight, particularly after his 3 year retirement