vs. Horizontal Jacks: Horizontal jacks can be rolled under a vehicle, but their minimum height is still limited by the vehicle structure and the thickness of the jack arms. Claw jacks are more advantageous in "absolutely low" situations.
vs. Scissor Jacks: Both have a lower starting height, but scissor jacks have a shorter stroke and less stability. They also lack the powerful "pry-first, then lift" mode of claw jacks, resulting in generally lower lifting capacity and safety.