I agree. I think Williams has the edge in power and speed. Chin is hard to say, but Lyle when he wasn't tired had better punch resistance. When two bangers like this meet, a lot comes down to skill and I think Lyle has the edge there.
I would analyse this fight in the following way: Power - Williams. But not by much. Speed - Williams. Chin - Lyle, I would say. He got up from Foreman and Shavers knocdowns and fought on as if little had happened. Skill - Lyle. If both showed up at their peaks I see the early edge going to Williams. But I don't think Williams had that much power to achieve what Foreman did. Lyle would hang tough and gradually gain control of the fight to stop Williams in the later rounds.