I only saw Hearns fight a couple of times and too ignornant on the subject to form an honest opinion. I do remember Hearns being large, or so I thought anyway. Physically he seems to big and powerful for Oscar. From the little I saw anyway..
The loss to Randall was clear. Close, but clear. Randall should've won the rematch too. Whitaker, on the other hand, the only fight you could make an argument that he lost going into the DLH fight was against Rivera. He clearly beat Ramirez.
Hearns outboxes Oscar for most of the fight. A very one-sided UD, and if Oscar makes a mistake, it ends sooner.
i'd lean toward Hearns but wouldn't be shocked by Oscar winning. Emmanuel Steward worked with both and said Oscar was more talented.