All storage engines prioritize performance? Back in the day, way before WiredTiger got acquired by MongoDB they also had very similar graphs showing perf differences with RocksDB and InnoDB: https://github.com/wiredtiger/wiredtiger/wiki/Read-scalabili... https://github.com/wiredtiger/wiredtiger/wiki/iiBench-result... https://github.com/wiredtiger/wiredtiger/wiki/YCSB-Mapkeeper...

And of course RocksDB has had similar graphs to showing perf against other systems.

Every system manages to find a benchmark that fits their narrative :)

Reality is both RocksDB and WiredTiger are high performance storage engines, and they are both optimized for SSDs too. These type of benchmarks rarely tell real story.