Hearns. Better technique and power. Robinson doesn't have Leonards defense or inside fighting. Got Hearns by decision
I would rather see the Hearns who fought Benitez and Duran than the one who fought Ray since that Tommy was more mature and experienced. And I would like to see a Tommy fight Robinson after he went the distance a few times, so he would fight it to win a decision rather than go for a knockout, which at times backfired, and might against Robinson. If he boxed and used his jab as though Robinson would stop him by counter he could win this.
Been calculating this fight for years and always come out with the same answer. Robinson stops Hearns, probably around the 10th. 2 of my favourite fighters ever