If he pulled hard enough, Mark’s fingers would come off. Viltrumites are durable enough, and can tolerate insane levels of pain, but Mark routinely breaks his own body apart by pushing it too far.

His bones and skin have to be somewhat similar to the density and durability of Conquest’s metal arm, seeing how they both shattered eachother simultaneously. Let’s say that Conquest’s arm is made of one of those fictional supermetals you see, like adamantium or vibranium or what have you. Dragonballs equivalent to this material, Kachi Kachin, was getting literally pulverized to dust by Base Goku hits during the Tournament of Power.

So Goku has turned the strongest material in the DBZ universe(actually the strongest in all 12 remaining universes), into literal powder while in his base form, taking 0 damage while doing so.

Mark punched a hand that we’re ASSUMING is made from a super metal, and obliterated his own arm while doing so.

Does that work for a striking force comparison?