We had a long discussion about this on the Fl IAEI BB and the top pictures seem to be the way this was listed as best we can tell. It is very hard to actually find much definite about it. It was clear to everyone that wrapping the wire around the screw and not laying it in the grooves was unacceptable. All it takes is a small twist of the cup to break that screw loose if the wire is not positively secured in the grooves. That will certainly happen when the the concrete guys are positioning it. They fold and twist it around to get it to lay where they want it.
Clamped in the grooves, the wire is not going anywhere and you can't put any torque on the screw by moving the cup around. I went around and talked to the guys at the pool company that built my wife's pools with a cup and a couple feet of #8 showing them the difference. It only takes a few seconds and a twist of the cup to demonstrate why the bottom picture is wrong.
BTW simply screwing a listed lug on there does not make this any more secure. You can still twist the cup and loosen the screw. I do think it may actually violate the listing to put a lug on it. Unless someone can show me an instruction sheet with a lug there, I will remain unconvinced otherwise.
