Those benchmarks look pretty dodgy to me. Whenever I see these graphs where two products follow the EXACT same line on a graph (in this case MySQL and Oracle), then I get suspicious - it basically means that the database is running at the fundamental limits of "something", be it the OS or the driver or the technology being used. That's not necessarily a bad thing, but it tells you nothing about which is faster - MySQL or Oracle. For that you need the database itself be the limiting factor, and it's obviously not in this test.