Hearns was just too big for Pryor once they'd both matured.
The stylistic edge for me lies with Tommy, though not a great deal.... the easiest (and perhaps laziest) comparison to draw from is Arguello, being a tall, long armed kinda guy.... though Hearns dealt with boxers a lot easier than Alexis did.
Of course, if Arguello could get Pryor's attention (and that he did
) you could argue that Hearns would simply slay him inside a couple of rounds.
That said, I think Tommy would be a tad cautious and would respect Pryor's ''overall package'' that he brought to the table. Excellent boxing skills, big punch and the willingness to get in there and fight.