abr is cool with them because they remember being an up and coming christian metalcore band. also, adam gray is sick, you're a fool if you don't think so. matt greiner will tell you that himself.
Gray might be a good drummer off the record, but I know middle schoolers that can play better than he can on the album. Aside from flipping sticks, I just don't see what he has to offer.
Compared to a drummer like Greiner, he's nothing.