That is what scaling debate is about. You are looking at it from a technical perspective, and that is good. That means that you probably know that SegWit2x is a dangerous code that is created for personal gain. It doesn't serve the Bitcoin community. Bitcoin ABC is just a political tool to delay SegWit activation trough the BIP148, and I doubt that they have even started creating this code.
The actual chain-split doesn't benefit anyone. So we have to keep in mind that it is more of a political debate than it is technical.