The pivotal reason WWE flipped Seth Rollins and AJ Styles between brands is because AJ complained a few months ago about having to perform on Friday nights and therefore miss his son’s high school football games – which makes sense. That was the easy part of the decision by the company. The difficult part was that losing Styles from a SmackDown perspective is a massive loss. Well, aside from being several inches taller, Seth Rollins is basically a carbon copy of Styles – both from an in-ring perspective and in terms of the level of charisma both men have. Whether they were performing in empty gymnasiums 14 years ago or wrestling for the Universal Championship at Money in the Bank 2019, one could tell they would both turn into something special one day.
If Seth was going to SmackDown, that meant Murphy as well as the Mysterio family would also have to come over to maintain continuity within the storyline as opposed to abruptly ending that storyline – which WWE has invested a significant amount of time and effort into formulating. The goal of this storyline is to make it so that when this story finishes, Seth Rollins has no allies anymore and can therefore be written off TV for a few months so he can take paternity leave. He will then be able to help care for his child with his fiancée Becky Lynch without feeling like WWE needs his presence to present a good product. This will enable Seth to be fully present with his child and that will benefit everyone involved.