In my so-far fairly limited experience I find Acros to be in the same class as TMX and Delta 100. IMHO there are no really significant differences in graininess or acutance.(posted 8313 days ago)Curve shape is pretty much dead straight. I don't see as much lack of blue sensitivity as TMX, and I haven't yet seen the halation TMX sometimes shows. Otoh it doesn't have the "smoothness" Delta 100 is capable of. Acros may turn out to have the best compromise characteristics of those two other films.
One disadvantage is that it's slower, EI 50-64, but that may be offset by its better reciprocity characteristics.
To sum up, I haven't found it to be significantly better than the other films, certainly not "revolutionary," but it's their overall equal.