Arguello's straight right hand would have spelled huge trouble for the upright Kostya. I can't see Tzyu taking the right hand's that landed on Pryor. Pryor likely only absorbed them because of what was in the special bottle.
I understand the thinking, but I prefer Tszyu since his entire body of work was at 140 whereas Arguello basically had one good performance at that weight that ended in a stoppage loss—that and some wins over not so good opponents.
Hatton by late stoppage Mancini literally went life and death with Duk Koo Kim. Hatton was able to beat a still good Kostya.
Arguello crushed former champion Costello with one righthand . Arguello would take KTs head off with that righthand .