Those claiming stamina is an issue here must forget or perhaps dont know that Hearns trained for 15 rounders, so it might be millenials claiming that.
It really is a hard fight to figure. If Tommy came in to box like he did Virgil Hill he might do well. It matters how focused and what gameplan he uses at this stage. Anything other than boxing and using the jab and counterpunching would not work out well for him.