Because they both use the same general types of dogging mechanisms, plate lifters and cable pullers both tend to look somewhat similar, they are closely related.
I am beginning to suspect the gadget is a barbed wire puller tho, it somewhat resembles another one I saw the other day, and the 2 loop rings might make sense for a way to hook both a tensioner tool and a rope to the same hook.....
Still in the wild guess catagory tho....