Hulk cracks continents. The gorilla weighs 400 pounds. This isn't a matchup.
The Hulk's weakest sneeze would ragdoll a silverback gorilla into the next timezone. His thunderclap would liquefy it. This is the most extreme real-animal vs. superhero mismatch possible.
The gorilla is strong for a primate. Hulk is strong enough to crack planets.
Hulk wins by existing in the gorilla's general vicinity too aggressively.
Hulk wins without trying or possibly noticing.
Silverback Gorilla also fights
Hulk also fights