I think it's important to note that unless the rules state specifically that "lift" means "lift over head", the strongest people in the world only overhead press half their deadlift. Maximum lift, I would assume without more information, would mean off the floor to an erect stature, arms fully extended down, holding an object with adequate places to fully wrap your fingers around. Change the way you grip it, arm placement, etc, and your lifting capacity can go waaaay down, and likelihood to injure yourself can go up drastically.
Also, if you've ever seen a video of someone pulling their absolute max, you know there's no way they are using that as a weapon. Even taking a step or two would probably rip their hamstrings, wreck their back, or tear their biceps off.