The GM set looked too narrow even if I try pausing it to find the widest point where your setting hand is not touching. This was compounded by the angle that the gripper was at with respect to the camera. The #3 set looked wide enough if I paused it at the right time, but it is difficult to judge. A slight pause would be pretty helpful with this.
Here is my MM4 close. Not to toot my own horn, but I would consider this very easy to judge.
The approximate distance from the center of the handle to the center of the loading area is 1ft. That way 10ft-lbs is 10lbs on the device. By comparison, a 4lb sledge with a 31" handle is about 10ft-lbs as well.