The only conclusion that can be reached from this is that a certain implementation of a TCP client/server for sending 4-byte payloads over the OS X loopback interface written in Scala is faster than another implementation written in Go. That conclusion in itself is absolutely useless, because nobody would ever use that particular code to perform that particular task. But it's also dangerous since it generalizes the result of this particular test to imply that one language is better than another at all tasks related to pumping bytes over the wire.
And that aside, it still fails as an experiment because the results are neither provable nor repeatable. There is not enough information about the environment used to run the test and there is no detailed test output. We get two numbers ("average round trip" for each implementation), but we can't check that they are correct, and we can't look at the distribution or calculate other, potentially more useful metrics. Even the code provided is different from the code used in the actual test.
And that aside, it still fails as an experiment because the results are neither provable nor repeatable. There is not enough information about the environment used to run the test and there is no detailed test output. We get two numbers ("average round trip" for each implementation), but we can't check that they are correct, and we can't look at the distribution or calculate other, potentially more useful metrics. Even the code provided is different from the code used in the actual test.