The outlet, using their influence, managed to corral 132 game developers, as well as gaming celebrities ("voice actors" is a descriptor used, but a few illustrators and entertainers voted) to choose the best titles of 2020. As they point out, Death Stranding took 2019's top honors, with Marvel's Spider-Man nabbing the award in 2018: so the winner doesn't have to be a Japanese studio.
This year, interestingly enough, a game about Japan by a western studio took it: Ghost of Tsushima. In second place was Animal Crossing: New Horizons, followed by Final Fantasy VII Remake, Sakuna: Of Rice and Ruin, and Fall Guys: Ultimate Knockout.
You can check out the full rundown here, which publicly lists the folks involved with the process (with studios from Arc System Works to Square Enix participating).