Add my pet peeve: not listing latency stats. Big Tables does millions of ops/sec but it can take 5(!) seconds to complete one. That's the stat that matters to customers.
> 1 DB server (Cassandra / Scylla)
The whole point of Cassandra is to run a cluster of servers to handle load at scale with minimal friction instead of having to buy a big single machine or spend all your time/money trying to run a clustered RDBMS. This test doesn't measure the correct thing.