Hmm, it does seem like they are not using think time.
From the official TPC-C specification[0]:
> The maximum throughput is achieved with infinitely fast transactions resulting in a null response time and minimum required wait times. The intent of this clause is to prevent reporting a throughput that exceeds this maximum, which is computed to be 12.86 tpmC per warehouse.
So the maximum result they should be able to get at 100K warehouses is 1,286,000 tpmC.
To reach higher, they should do what Alibaba did[1] and use 4,794,240 warehouses. They got officially accepted with a result which dwarfs even Planetary’s incorrect benchmark.