Not sure if I totally agree with the jig part of you post. A SPJ knockoff costing 1/3 the price of a well known name brand is most likely made from lead. Two jigs coming from the same mold made out of different materials will have totally different actions. A 250g jig made of lead cannot swim the same as a 250g jig made of aluminum, or an alloy, or even stainless. Reals Plate jerker is made of an alloy body with stainless fins, if I remember correctly. As far as rods I don’t know enough about the new nano technology. If a nano blank from the #1 SPJ company and a nano blank from a knockoff will have the same dimensions, taper, length, tip, butt, will the actions be the same?