True, benchmarking is really not trivial. Thanks for pointing us to the bug in our benchmark suite and sorry for our mistake. We fixed it https://github.com/weinberger/nosql-tests/pull/24 and reran the benchmark. We will publish an update soon and also fix the stats in the original post. Indeed, Neo4j with connection pooling improved stats in a few test cases but the overall ranking is not really affected.

Thanks again for helping us to improve the benchmark and creating fair conditions for all products tested!