Bitcoin Cash might have moved up just out of a technical play mainly...... it had been beaten up so much compared to the Bitcoin price that maybe people felt it was undervalued. Plus it can be used to move money around more efficiently to exchanges. So it is hard to say.
Right now it seems like a lot of people are searching around for stuff that hasn't surged yet.
Thanks for your insight. By the way, I used your trust wallet tutorial a few weeks back for cub. Appreciated that!