1
Facebook Login is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
2
In terms of market share, Google+ Sign-In Button is clearly lagging behind, losing to Facebook Login in all segments.
1
Facebook Login has better usage coverage in more websites categories. Including People & Society, Business & Industry, Internet & Telecom, Arts & Entertainment and 233 other categories.
2
Google+ Sign-In Button hasn't got a lead over Facebook Login in any websites category.
1
Facebook Login is leading in most countries, including United States, Turkey, India, Russia and 196 other countries.
2
Google+ Sign-In Button is leading in Uruguay, Northern Mariana Islands and Marshall Islands.