In conclusion, given a traversal of an artificial graph with natural statistics, the graph database Neo4j is more optimal than the relational database MySQL. I

In conclusion, given a traversal of an artificial graph with natural statistics, the graph database Neo4j is more optimal than the relational database MySQL. I get what they mean, but "more optimal"? Please... Maximal, minimal, optimal, and the corresponding verbs, require proof. Why not use "better", "improved", "shorter", "reduced", "faster" or "sped up" instead?