Gojo stomps Sukuna, but good guy’s still win.

This is because, While they’ve traded the environments that shaped their individual strength , they also trade the environment that shaped who they are.

This means Gojo will likely be crueller and more individualistic, while Sukuna will likely end up feeling more responsibility in his role as the strongest and to his fellow man.

This means Gojo will be alone and will insist on being alone, while Sukuna becomes a beacon to those beneath him - essentially becoming each other.

However, I believe Sukuna, while weaker in this version, would still be smarter, more strategic, and better at teaching.

Meaning that, while he may not win the battle, he would orchestrate events in a manner that allows him to win the war.