NERDGASMED

GreaseMonkey is an developer tool which is not intended for an average user.

"An average user" can just copy the plethora of free scripts that are available online. It's so much more than a dev tool. :/

Ubiquity is nice because I can press Ctrl Space and look something up on Google, YouTube, or Wikipedia without having to reach for a mouse. If one was motivated enough, they could make it search any engine.
http://mozillalabs.com/ubiquity/

I doubt there's an addon for it in Opera or Chrome, but something that functions similarly isn't too far fetched. I don't use anything beyond the search anyway.

Is it just me.....or arent the scores affected by your computers hardware as well :c|

Clearly, as it runs stuff through the browser. Better computers will get better scores because they can do it faster. However, testing multiple browsers on the same computer should give an accurate comparison.