The complete ruling is here. It is written in plain English. I couldn't find a non-scribd link though, sorry for that.
http://www.scribd.com/doc/184176014/Judge-Denny-Chin-Google-...
What has been "decided" is that given the facts stipulated to by both the Authors' Guild and Google, Google is not breaking the law. Instead, their conduct is in accordance with "fair use". Nothing more or less.