Comment by arp242

To do this you would need to have a comprehensive definition of "quality", and that's anything but easy, and it will be at least partly subjective. It's also hard to include omissions in your definition of "quality" (and again, what should or should not be omitted is subjective as well).

For example, let's say I search for "Gaza"; on one extreme end some engines might only focus on recent events, whereas others may ignore recent events and includes only general information. Is one higher "quality" than the other? Not really – it depends what you're looking for innit?

All you can really do is make a subjective list of things you find important and rate things according to that, and this is basically just the same thing as an anecdotal account but with extra steps.