Ok I finally have a chance to look at this. While they don't match up perfectly, the hand poses are still way too similar. I think this leaves us with two possibilities:
1. He traces over himself when he wants to draw something because he can't be arsed to sketch something over again
2. He's dragging and dropping individual body parts and isn't sizing or spacing them out the same way every time, hence why there are subtle differences in the overlays.
I'm curious, can you see if the heads and hairstyles on the redhead match up? Also, I included some other links in the article comparing the main character's pose. Could you see how well those match up too?