User blog comment:FTWinchester/Season 9 Recurring Characters/@comment-108.247.151.83-20130722011121/@comment-1509826-20130722204905

True, Anna was mostly human, however she was still able to access some of her angelic powers, particually when threatened. We have no reason to assume that the other angels won't be like that, reguardless they will still be a lot weaker.