I would edge towards Hank based on his competing well against almost everyone of note in the middle and light heavies in a more talent laden group. Check his record it is a who's who of the period. At 5 ft 7 ins he didn't duck anyone. When Hank was past his best, it took the much taller Bob Foster 10 rounds to administer his only stoppage loss. A few months later he took Foster the full 12 rounds. Briscoe had a terrific record, a true globe trotter. As both men won and lost against the best, they may well have fought each other 2 or 3 times to split decisions. Another good one would be Tiger v Briscoe. Hank lost clearly to the Africa's greatest, but Bennie might have fared better.