It seems like you integrate with the likes of Google (Webmaster Tools) and Cloudflare in ways not done before, so my assumptions here are probably a bit outdated.
Let's say you want to test a new title. You collect stats for a week, change the title, collect stats for another week. The two datasets are then compared. Am I close?
Does it mean that you can't AB test in parallel? If so, it's not optimal for time sensitive stuff like breaking news.