NoScript's main goal is to block active content to improve security.
If you block scripts from google-analytics.com, a request to connect to that domain can still be made if the data is not javascript. Another source for the observed connections can be (DNS-) prefetching.
In turn this means that blocking scripts using NoScript or Ghostery does not fully hinder advertising companies to track a user.
This is where Request Policy comes in. It enables the user to define rules for cross-domain requests on a per domain basis. While this does give the user a higher degree of privacy control, it can be cumbersome to configure in addition with NoScript.