[pkolaczk]

It is marketing, because Couchbase is a featured customer of Altoros, the company that did the benchmark. And the rule of thumb is: never trust a benchmark done by someone who is related to one of the benchmarked systems. Obviously they'd not publish it if Couchbase lost the benchmark. They must have had been insane to do it.

Another reason it is marketing is because it lacks essential information on the setup of each benchmarked system. E.g for Cassandra I don't even know which version they used, what was the replication factor, what consistency level did they read data at, did they enable row cache (which decreases latency a lot), etc.? Cassandra improved read throughput and latency by a huge factor since version 0.6 and is constantly improving so the version really matters.