Any large catfish with tooth patches must have strong mouth muscles, actually on paper maybe even stronger than formidably toothed fish. It would appear harder to grab and hold on to a slippery prey with "sand paper" teeth than with large, discreet, flesh-penetrating teeth.
But this is beside the point. Sorry. Most large carnivorous and omnivorous catfish hunt or scavenge large prey and hence need strong jaw muscles. The bigger the fish, the stronger the bite. Crudely, I'd imagine all similarly built catfish of the same size probably have comparable bite strength, as in pounds per sq inch.
The difference is how they use them and for what purpose. If they wanted to, they could damage any tank mate, rip off all fins, eyes, and skin them, and then take bites out of the soft flesh, etc. They just don't want to go through all this gruesomeness

ARTC wants to
The jaw strength goes toward bio-mechanics. E.g., in land mammal predators, IIRC hyenas have the strongest bite. They are able to crack open femur bones of very large animals like buffalo. The size and the built of the skull, the geometry of the attachment points of the tendons and muscles, the size of the muscles, etc. is what gives their jaws such incredible strength.