Why there are two Christian writing groups?

Can someone please explain what the difference is between the two Christian writing groups - the original and now this one?

It is so hard to get traction/members/active posts/dialogues in even the more "mainstream" groups (e.g., sci-fi, fantasy, young adult, ...), that dividing the Christian camp in two seems to increase the hurdle for what is often seen as an alternative media, albeit a potentially powerful one.

With only ten groups that I can join, I prefer not to have to post all my questions in two whenever I have a question to ask or something to share, yet would love the widest possible exposure and opinions. This just made it twice as hard to do that. Some groups on the site are so obscure that writers have taken to posting their questions in Premium for maximum exposure, thereby defeating the purpose of groups entirely and making an unorganized mess out of the Premium forum.

Full disclosure: Although spiritual, I am not Christian, but my sci-fi book has an heretical Christian theme, among others. I would love insight into the Christian community's thoughts about the questions my main characters raise about the reality of God. One MC is a Fundamentalist Christian, and the other, an avowed atheist. Each MC follows a character arc that causes each to question their beliefs.

Hopefully, it's not too late to settle on one of these two groups so that we can all focus on a shared community of like-minded individuals. I'll cross-post this to the other group as well, but I don't see myself doing so on an ongoing basis. It's simply too much effort given too little free time.

Thanks.
Dirk