The Hulk's limitless strength scaling means Omni-Man cannot win a prolonged fight.
Omni-Man has clear advantages in speed, flight, and combat technique. He fights at FTL speeds, has thousands of years of experience, and is a ruthless warrior. Early in the fight, Omni-Man would dominate through speed and tactical superiority, landing devastating combinations while avoiding the Hulk's slower attacks.
But the Hulk's defining trait changes everything: the angrier he gets, the stronger he becomes, with no upper limit. Every punch Omni-Man lands makes the Hulk angrier and therefore stronger. Eventually โ and it might take time โ the Hulk reaches a power level where Omni-Man's attacks do nothing and the Hulk's punches become genuinely planet-threatening.
Omni-Man's best strategy would be a quick kill, but the Hulk's durability is already beyond Omni-Man's output from the start. The Hulk has tanked planet-level attacks at his baseline. Omni-Man helped crack a planet with two other Viltrumites, which suggests his individual output falls short of what is needed to put the Hulk down before the escalation begins.
The Hulk's strength scales infinitely with rage, and Omni-Man's attacks only fuel that escalation. His baseline durability already exceeds Omni-Man's offensive output, and a prolonged fight is a guaranteed loss for any opponent with finite power.
Omni-Man's FTL combat speed and flight give him tactical superiority. He can deliver thousands of blows before the Hulk can respond, and his millennia of experience include strategies for fighting stronger opponents.
The Hulk wins a prolonged engagement through inevitable power escalation. Omni-Man dominates early but cannot finish the fight before the Hulk's rage makes him unstoppable. Speed delays the outcome but cannot prevent it.
Hulk also fights
Omni-Man also fights