Yes the 0 and 0 is for the Private Groups which actually does have zero topics and zero posts. The subforums have a smaller folder and indented title so you can tell it's a subforum. That does not show details on the forum.
It can be added but this just looked neater. If anyone wants to know, it can be checked here www.muftisays.com/forums/47-private-groups/
Does anyone suggest having the the info for subforums? It's not really a problem to add it, please let me know.