What's innacurate about that chart?
Regarding the Hydroxystim DMAA claims, I think there are two possibilities:
1. The authors 'misinterpreted' Hydroxystim's label.
2. In the authors' defense, they also found that DMAA used in these supplements is 1. from synthetic origin and 2. DMAA is not naturally occuring in commercially available geranium oil/extracts (although they didn't test geranium robertanium to my knowledge). These findings directly imply it's impossible for any supplement company to claim they use a natural DMAA source (4 companies in this chart claim they did use a natural DMAA source). Still, many companies mislabel(ed) synthetic DMAA as geranium oil/stem/extract.
Whatever it is, I don't believe it alters the main conclusions of this paper.
It does make me wonder why the acute USPLabs DMAA safety study* only used up to 75 mg DMAA, while this analysis shows that Jack3d contains 142 mg DMAA per serving. Unless they changed the formula or this analysis is a fraud this is a very misleading move.
* Invalid Link Removed