AFAIK first hand, no "I heard/I read/someone told me that..." all Rollei films I tried are slightly different from those things that many folks said that just plain repackaging. The R3 has a different layer order than Maco cube, and yes, I think that they are pretty optimistic with their speed ratings, same with Pan25 that I also think it's more close to 6 than 25, probably the same counts for that IR film.
About the apx/retro issue, there are so much noise about being the same, even a letter from Maco. Well, the rolls I've used (400 - 135) doesn't behave as apx used to, they looks close, yes, but some details like grain structures looks different to me. It will be nice to have a bit more of information from the maker, at least to shorten the boring test stuff.