Yeah, Reich would have been a bigger band at the time maybe but, the fact Sepultura is headlining would be strange in that context. Napalm and Sepultura were coming up at almost the exact same time and around then would have been about as big as each other. Reich would have been maybe bigger than them both then.
My point being that sacred Reich were crap and Napalm Death fucking rule!!!
Depending on the year this might have been an early U.S. concert for Napalm Death which means Sacred Reich was more well known at the time. Gammacide on the bill pegs this as a late 80's show (maybe 88-89). It also explains Sick Of It All being low on the bill.