This topic is STILL linked to benchmarks on official dgraph site… neo4j 3.1 was outdated even in 2017. Dgraph 0.8 is not relevant too.
I do not understand what tests and PRs you mean. It WAS a good idea to benchmark pathfinding, community detection et c on large graphs.
I’m just using neo4j for several years, never thought that I needed JSON. All input and output is FLAT )