I dunno, #6 Shocks weren't easy to find on basic cards around here... However I've blown the photo up and the nubs definitely aren't a packaging distortion, however I can't say what they are... They look like the antenna's to me but even if it is the #41 it doesn't mean that's what we'll wind up getting either so it's neither here nor there at this point.
I don't think it's always easy to tell an articulation point either by photographs. For my money, I can see a vague line/difference at the torso but nothing significant to conclusively prove to me it's either sculpt. The SA Clone's torso joint is fairly "tight" on the figure though and I don't notice the separation of the pieces on any figure really unless the picture is just at the right angle.