Stardog 4: Polyglot Graph Database

I use Neo4j for two projects at the moment, though I make pretty heavy use of the REST api as I'm not working on the JVM. What advantages does Stardog have over Neo4j?

Combines property graph (Apache TinkerPop 3 and Gremlin) with RDF, SPARQL, OWL, and rules... Graph all teh things!