Very intereting question. Two very powerful fighters with boxing ability and questionable chins. I think Hearns chin is worse so Jones has the edge. But Tommy had a razor accurate jab that could control a fight. I don't think Jones has ever fought a fighter of Hearn's quality (that's not his fault) so this would be a real test, but at the end of the day I think he had the physical gifts to over come the Hitman.

However, the fighters who beat Hearns in his prime (Hagler, Leonard) did it by imposing their will on him, no one really outboxed him...and I don't ever recall Jones ever being tested like that (having to beat a boxer he could not outbox).