-Requires the reviewer to actually own / play the game
-Highlights the amount of time played so you can easily filter out people who just dismissed
-Lets you know who got the game for free or reviewed the game in early access
-The magnitude of votes is shown which lets you know if it is a niche title or mainstream blockbuster
-Gives you a timeline of votes so you can see changes over time and see if there are any review bomb cycles happening
It's not perfect but I find it wild that people think there is any value in these movie review aggregator sites when you can't even verify if the person watched the movie at all and these guys can just spam votes. Worse yet there isn't any incentive for the site to change this since more traffic means more eyeballs for ads.