I think they got their aspect ratio statement backwards. Surely 16:9 (iPhone 7) content appears pillarboxed on the 19.5:9 screen (iPhone X) and iPhone X content

I think they got their aspect ratio statement backwards. Surely 16:9 (iPhone 7) content appears pillarboxed on the 19.5:9 screen (iPhone X) and iPhone X content appears letterboxed on the iPhone 7?