Ridiculous to compare usage numbers between the two considering Facebook at that point (e.g. when they were at 100mil users) had no dominant products that its users were using every day. In other words when Facebook users went to Facebook, they really meant to.
With G+, the monthly stats are meaningless since they're probably representative of Gmail logins who accidentally click on +.
With G+, the monthly stats are meaningless since they're probably representative of Gmail logins who accidentally click on +.