Give it a second glance.
The damage a Hulking Hurler does with a thrown object is based on the object's weight. The heaviest object an HH can throw is something up to their light load capacity, or their medium load capacity with the Overburdened Heave trick. And remember carrying capacity scales not only with the strength of a creature, but also with its size. And additionally, a sharp or pointy object deals damage as if were an object of twice its actual weight.
So as a very modest example, say we have a Str 25 ogre with 2 levels of Hulking Hurler, and Overburdened Heave. Medium load is 533 lbs, doubled due to being Large, clocks in at 1,066 lbs. Okay, so our ogre purchases a 1000 lb ball of spiked iron. Imagine it looking like the head of a really large, really mean flail. Enchant it to be +1 and Returning, just for convienance sake. Each attack, our very, very modest example can chuck his weapon for 13d6 dmg, plus relavent modifiers.