A couple of browser tweaks or a different security software can make a big difference, even if the hardware is otherwise identical.
Then there are underlying OS functions and other 3rd party tasks that would need to be ruled out. Simplistic version: best to run each benchmark after a clean boot, reboot to test browser #2, etc. Run 3x per browser minimum and look at the average.
Then there are underlying OS functions and other 3rd party tasks that would need to be ruled out. Simplistic version: best to run each benchmark after a clean boot, reboot to test browser #2, etc. Run 3x per browser minimum and look at the average.