They say that Glicko 2 is more accurate than Glicko 1, and they reference a kaggle leaderboard. On that private leaderboard, I only see "Glicko benchmark" and "

They say that Glicko 2 is more accurate than Glicko 1, and they reference a kaggle leaderboard. On that private leaderboard, I only see "Glicko benchmark" and "Real Glicko," so I don't see how they made that claim. I find it dubious that Glicko 2 would be more accurate out of sample.