That film is the same as the CR200 you refer to.
Agfa did not make new reversal film but sold long-rolls to be converted by Wittner. They recently invested in perforators and tools.
In that Wittner text I did not read anything about ISO160 either.
In the photo belonging to that news-report boxes of "wittnerCHROME 200D -16O ASA notch" are shown.