In order to judge if something is better, it presumes absolute reference points. In otherwords, google ranks the "productivity", generally. And then only later, refines the relative merits within a sub-class. (And if this was true, it would have nothing to do with Rap Genius.)

Avoiding the (questionable) debate on the productive capacity of planet-earth...the "model" of what customers' "really need" is questionable. Do they need (1) information that is factually correct?; and/or (2) do they need the actually meaning or interpretation of (1). And if its true a subset need (2) what is the ratio of (2/1)?

And only then does this framework make sense.