Just because a site has a forum page does not make it a forum based site.
A forum page or FAQ or a place like a community page is also a basic feature.
This is not a forum based site, it's a game. Games have buddy's.
This site even promotes a social aspect as you try to play against managers from everywhere and 'collect' flags.
Please don't get caught up in the semantics of 'all'. I'm sure anyone could find an opposite example. I'm sure I can find many more that support me. Like Urban Rivals comes to mind.
Friend lists are basic features.
I'm not on Facebook so I wouldn't know either.