Aaron Pryor KO in 7. Not underestimating Tszyu by any means, just that Pryor's relentless attack and ability to eat punches in the later rounds would eventually get to Tszyu.
I can see this happening the other way too. I don't think Pryor's opponents would beat Kostya. Cervantes was to Pryor what Kostya was to Hatton. Give Kostya the beenfit of the bottle and he beats Arguello too... After that Aaron's wins at the weight are not going to be mentioned in any letters to your family. Your description pretty much sums up why I think Pryor loses. The mad man, relentless attacking, consistently wasting energy... Pryor will not walk through Kostya's shots - not all night anyway. I think we see the fight inthe same way but come to different conclusions.