I think on that latest rendering, the stipple looks more pronounced than it would be normally, since the lighting is a bit different (brighter) than the last image.
Look at the first 'blinged' image, and you'll see the difference.
The stipple, I think, would make the details stand out more on an actual token. Without it, the various design elements would probably blend together.
I've got a 'Retroblast' token, with stippling on it, an it looks *really* nice. It's very subtle.
EDIT: Here's an image comparing the two. The stipple on an actual coin, looks more like the rendering on the left.