GoldWithFalmer
Seaweed! Seaweed!
It's pound for pound hardness, like boxing. What it can do compared to a human is irrelevant, what the two would do against each other (unless similarly sized or they actually co-exist in the same habitat) is also not important. Pound for pound is what we're after. People's definition of hardness varies but it should consider things such as aggression, attitude and ability to give and take a beating. Size in and of itself is not important.
Pound for pound the wolverine can deter or at least inflict damage on it's far larger (even multiple)predators-the shrimp just gets taken out by it's larger predators.