This is the Sharkey who ripped into Dempsey and was beating Max handedly in their first go against the prime in his best shape Johnson, and why not? I would put Sharkey in the win column against any of the challengers of Johnson's day and maybe a 50-50 shot against Langford if they fought more then once. I can't see Sharkey winning as Johnson was too constant at his best and Sharkey could be taken out of his game at times.
Would depend a bit on what was allowed and not allowed. I get the feeling, both at their best, Johnson would put a hurting on Jack, and likely toy with him in spots
