From his explanation before removing everything:
I find myself in a very uncomfortable situation right now because, after revealing my personal information as the project owner, the current circumstances create a real damage to my public image as a professional and as a person. My coworkers, my managers, my employers (current and future) can see all of this and my personal reputation is compromised.
Unfortunately there was some error in the first version of the benchmark and the app's score was 4.1.
The project was tightly tied to personal information about the dev, so he feared to be affected on his real life after negative comments started being posted.
The last post on the community told that either a fork would continue or he would republish everything under a different GitHub account.
A fork has indeed committed to continue his work and it has a couple of knowledgeable people working on it already, so it looks like nothing is lost. Plus the leaderboard has been amended ๐