Both of the Characters have battled a large proportion of their Respective Universes.
Here is the backstory The Hulk is waiting on his rumored surprised Gladiator opponent on Sakaar, Next thing you know it's Black Adam.
Round 1: No World Breaker Hulk
Round 2: World Breaker Hulk
Round 3: Tie Breaker if needed
Who would win between these two Weapons of Mass Destruction