Kevin, I looked over your photos. I appreciate your effort and hard work, but honstly, I can't tell anything by the pics you have shown. I can only tell when holding the same pieces in my hands, and only when inspecting the inside surface of the armor.
Regardless of whether or not this guy is recasting your kit, the way you fight this fight is what's most important here. Don't make enemies you don't need. let your integrity, quality and customer service sell your goods. I can see that your armor has sharper details and others can see that as well. We know who the recasters are and they don't last very long here.