Directory Opus synchronize vs MS robocopy

...with the exception of Network drive to Network drive copy/move operations. But you are right, everything else there is no visible speed difference plus the "Run unattended" queue in DO is worth several times it's weight in gold, especially because of its error reporting and selective retries.

For Robocopy button see here: Multithreaded copying - Help & Support - Directory Opus Resource Centre (dopus.com)