Strypers top selling albums.

I was thinking about this today and I'm sure somebody on here will know for sure but I thought thier best selling and breakthrough was THWTD followed by, IGWT,SUC,Y&B and at the bottom ATL. I assume the peak of their career was THWTD and IGWT tours when they were a sell out arena band? Just interested please weigh in if I'm wrong. Did they ever reach stadium headline status like Motley Crue? I'm from England and unfortunately Stryper were never that big over here.