The ends look different to me- the walking stick looks rounded at the top, and the stick Neal is holding looks flat. Also, it’s hard to tell and maybe it’s just the lighting, but the stick Neal is holding appears to have a blue tint. I’m not sure why Rumple would have held on to his old walking stick once he was the Dark One anyway, and the way Neal is holding it makes me think magical object. But who knows? It’s all speculation. 🙂