Many of those who close massively heavy gripper -- or any gripper at all -- seem to "set" the gripper, which means partially close it using both hands to get a better grip on it before completely closing it.
Why isn't this cheating? It's like using two hands to get a barbell off the ground and then holding it a few seconds with one. I don't think that would count as a one-handed deadlift, but whatever. Anyways, I've never used grippers this way and just close them 100% with one hand never set them.
Why isn't the partially-assisting way cheating, but no props given to the harder way?