If Hulk wins
>Hulk and IT meet face to face
>Hulk performs a crossroad feat
>Image shatters with split timelines shown across the screen
>While the Hulk is slain in some of them, the Hulk is victorious in most which causes the Singularity of IT to actually feel pain
>The timelines all collapse back in it each other
That or
>The fight simultaneously displays a split screen of Bruce Banner figuring the equation while Hulk is out there fighting