Google is currently a playground for scrapers and content thieves.
I have the same problem with content scrapers and Pinterest pages ranking above me on Google with my stolen content. I do not have this problem with Bing. Thus ... which one is the better search engine? Right ... Bing.
Google+ authorship, social signals and stuff like that are a huge joke. If you set up a Wordpress based site today with tons of stolen text and photos, you can be sure to rank on Google within a few days/weeks. Google is simply unable to identify stolen content.
When I sent Google Search DMCAs it used to take one or two days before stolen content got removed from the serps. Right now it takes at least a week.