I'm glad to hear you've heard good things. JFBConnect has been around for 8 years now and has powered many amazing sites. We hope you'll consider using JFBConnect as well.
As to your question, yes, you can import the friend count from a few social networks. However, not all support fetching that information. Off the top of my head, I know that Facebook and Twitter can have their count pulled in. Instagram can not. With JFBConnect you can pull the follower information into any of the profile extensions we support, like Community Builder, JomSocial, EasySocial or even the standard Joomla User - Profile plugin.
Thanks,
Alex