G+ almost always has better content.
The only explanations I have for that are that it's mostly techie people on there and the bar for posting something is a little higher than Facebook. I don't see people whining that WoW is down, but instead that they found some new scientific breakthrough in the news.
Anyways, I'm a tech guy, but also into photography (http://plus.google.com/104936988539783595605), and I must say G+ keeps me plenty busy, more then I've ever been on Facebook, where I sometimes cross post to, roughly, the same audience (non of my family members though are on G+ just yet). Actually, I like G+ for being useful, easy to use, and I give Google credit for listening and quickly adapting and evolving.
It seems like very interesting content from (and for) a small audience, draws a slightly larger audience, and they bring slightly more popular but also slightly less interesting content, and repeat until you have the reddit front page as it is today.
My Facebook stream has about 50-100 posts a week.
So I don't know if we just cancelled each other out. But to me, G+ is pretty much dead.