Blonsky's ugly body contained an energy that could neutralize the Annihilation energy.
The "quality" of the Annihilation energy was high, but Blonsky had more "quantity."
To cut a log one meter in diameter with a knife that was one centimeter long required numerous successive cuts in exchange for continuous damage.
Blonsky's body wasn't made of wood, and he had a strong self-healing ability.
Even if this resilience couldn't swiftly offset the damage from the Annihilation energy, it was still a tug-of-war between the two energies.
While the Dark Knight was fighting Blonsky and drawing most people's attention, Damon and Mindy found the Grayburn University lab where Blonsky had first appeared.
There, they found the unconscious Dr. Samuel Sterns and the leftover blood serum from Dr. Bruce Banner.
After asking Luke, they immediately took the scientist away from the scene, along with the laptop and the remaining tubes of blood.