I am not sure I see that. Pryor was good and he beat Arguello in 140 and really beat him up, but his ability to take the punches were what kept him in that fight. He shouldn't have been able to absorb those right hands. At 130 I doubt he would have. Arguello lost a little power moving up to 135 and then alot to 140. I remember seeing Arguello in a comeback in the mid 80s where he fought Billy Costello. Maybe I am wrong. I think he knocked out Costello in 4, and then never fought again.