The gentleman who produced these benchmarks replied directly to this thread. He also has been very open with sharing his scripts and setups, so that you can reproduce it yourself. He encourages it actually!
It doesn't look like he actually shared the scripts for this year's benchmarks, unless I am missing something.
That's what I'd be looking for, not so much some basics on the clusters and the workload.
I may have missed something obvious, but can you link the reply? I'm having difficulty finding it with all of the other comments in here.
Worst case, people are going to benchmark this independently and hopefully do a better job being transparent.