The final knockout of the Bomber's career is on YouTube, and that full count came from a single left hook on Savold. In shortly retiring Lee, Rocky did send him to the hospital, but didn't knock him down. Joe's hook remained an extremely dangerous weapon, but he admitted having to think to throw the right, and experts noticed that his combination punching was gone. Still, both Charles and Louis left their bout looking as though they'd been in a fight with their swollen eyes, while the Bomber was completely unmarked after the Rock (who as was often the case, did look as though he'd been in a fight). Sure, the fatally slow starting Jinx was quickly wiped out by Tyson. Some much bigger guys suffered the same fate even more quickly (Savarese, who was first decked 15 seconds in, for example). Don't read too much into Tyson-Jinx.
A rubber match would've been no opening round stoppage for Louis, as Schmeling made abundantly clear in his televised comeback a year later before 70,000 cheering German spectators, one punching Heuser (and sending the tough short Bulldog of the Rhein to the hospital) for the European Title. Max clearly wasn't done if WW II hadn't come along. Schmeling had a style that aged well, and Burley very likely copied his stance from the then extremely popular Max when originally picking up boxing.