For me, styles favour Hearns, but I don't think he could deal with Nunn's physicality here, who'd stop Hearns late imo
I can see the argument for Nunn, but I sense at some point in this fight Tommy tees off with one of his straight rights that deflates Nunn. Even if he doesn't get stopped his transmission will be in reverse for the rest of the fight.
Hearns was a cut above. He was a tiche better at the long game ... BUT ... its at 160, so I would make the fight even ... bad weight for Hearns