Without publishing the complete source for each test, these benchmarks are not very useful (the author does promise to publish sources for a new test in future)

Without publishing the complete source for each test, these benchmarks are not very useful (the author does promise to publish sources for a new test in future). It appears that initially node.js was in 'development mode', so presumably the post initially showed Play beating node. With unreproducible benchmarks there are inevitably configuration errors made, or configuration tweaks that aren't applied.