That is why the Ankylosaurus family has vulnerability strike with the icon of a broken leg.
I don’t know what else to say to you at this point. Breaking bones are not that hard and any muscular dinosaur can do. Stegosaurus can break bones with Thagomiser as well.
3.5 metric tons of crushing power? Nothing comes close other than giant crocodiles like Deinosuchus and Megalodon. Tyrannosaurus is literally a monster among animals.