According to me Facebook is the king of this era in social networking sites and Google plus is still struggling to become famous as Facebook.
Google is one of the leading internet website which is more better than face book and billions of its user around the world as compare to face book.
i think Facebook still the leader of social media ...because large number of people on Facebook but Google+ has no so much ..thats why i go with option b (no). but in other sense Google is the world largest search engine .no one beat Google popularity.
may be no is the my answer because Facebook is better than the Google+ in all type of tools and applications.