Windows 10 WSL vs. VirtualBox Ubuntu Performance On An Intel Core i9 7900X

Going beyond last week's Intel Core i9 7900X Skylake-X Linux distribution comparison, here are some complementary tests when trying out the latest Windows 10 Insider Build with its Bash/Windows Subsystem for Linux featuring Ubuntu 16.04 LTS. Additionally, some comparison results when running Windows 10 with VirtualBox and then an Ubuntu 16.04 LTS guest, all from this i9-7900X high-end desktop.