imo youre making too big a deal of things. most knock off's work just as well on the fish. if you've had great success with the original sweet beavers, then the knockoffs will work just as good. the only thing to consider in knockoffs is how durable they are. if it looks like the original, the fish wont be able to tell the difference, only you can. seems to me the only difference is the jagged claw shape.
dont over-complicate things