[ilc]

The NSA doesn't need to know what Google knows. It needs to know things beyond what Google knows.

It may have less information overall. But that information may be of much higher value.

It is not much data to know how other countries are encrypting their political or military data. And the amount of data in there may not be that high.

The value is... tremendous. Bulk data collection, gives an overall picture. But the details that make it real, that's the secret sauce of the NSA and CIA.