Neo:
I think it is, but it doesn't seem like a noticeable one when you're not right up next to the figure. I was in Forbidden Planet today and got to see the figure on display in a glass cabinet. I looked for this problem and could see it, but only barely, and it wasn't even noticeable until I actively started looking for it.
With that said, I don't know how things like figure displays work. It's possible Forbidden Planet got to carefully take the top off the box and inspect each figure to see which one looks the best and to decide which one will be displayed. Maybe that's crazy talk. But what I'm saying is, while it's possible the figure on display looks better than average, the stitching didn't look like a problem on the figure from only about two feet away.
I opted to come home empty handed and buy the figure on their website, since I was informed in the store that it's about £50 cheaper on the website. I'm curious about how the stitching will be on mine, but judging by the one I saw in the store, it's nothing to worry about.