No, it detects an anomalously high positron count, which may or may not have anything to do with a hypothetical particle interaction which may or may not have anything to do with dark matter.
Of course, six months from now we'll be reading articles in Scientific American about how the AMS test actually confirmed the presence of dark matter and how new research based on the AMS data gives us a better understanding of how dark matter interacts with galaxies or something.
In short, dark matter is bullshit
, and every article claiming to have confirmed it, studied it or examined any concrete facet OF it is, in fact, presenting bullshit
based on an assumption based on another assumption based on an hypothesis for which no evidence exists.