I find the same thing. I think the difference is that since 4sq is soliciting tips instead of reviews, they're harder to convincingly game. If I'm looking for a restaurant in an unfamiliar city and see "definitely try the squash risotto with balsamic drizzled" that means a lot more to me than "everything here was yummy!" Without a star rating to game with 1- or 5-star reviews, there's less noise to sift through.
That said, I assume that their 0.0-10.0 ratings they introduced a few months ago are basically random.
That said, I assume that their 0.0-10.0 ratings they introduced a few months ago are basically random.