Cox sucks because their sauce sucks. It's easy to make plain tasty meat, the sauce is what defines a place.
did you try the other 3 sauces?
Yeah, I don't agree with the premise of sauce makes the BBQ at all.
Consistently producing flavorful, moist BBQ is the art of it, unless you are talking pulled pork. IMO pulled pork is the easiest BBQ to produce.
But to make good burnt ends is difficult, and OK Joes does it the best. Then a good brisket (ABs) or sliced pork (Gates). Then sausage (ABs).
Cox Bros isn't as good as any of those, but IMO their brisket and sausage are still very good. I'll eat their pulled pork to, but again, I don't judge any BBQ place by pulled pork.