Google may not be as popular a platform as FB, however, if you post content on Google+ you may find that your post gets ranked in the search engine for a certain keyword in your post, which will not happen with a fb post.
Facebook and Google plus are both social networking platform but Fb is most popular in the world. For the different ideas, you can follow some good G+ page and their post. I hope you will get more idea and you can decide which better for you.
I like Google+ There are a lot of functions there. Almost everyone use Google photo and gmail. It is very practical
Yes, I would agree with your opinion. Google has so many projects on the Internet. Some are really successful and popular, while others are not so much popular. Facebook is just a social media network and its management focuses mostly on that area. I believe that is the reason why it is more successful than Google+
It seems to me that they are completely different and can not be compared. Everyone is suitable for different things. Each of them has its advantages.