Total Recommendations: 2
I labelled the animes as similar as well. I've gotta say, when I originally read the manga it gave me the same feel as Black Cat did. There are some character relationships that are the same, such as Atsushi and Kyouka being similar to Train and Eve. There are story elements that have the same feeling to them, though not in a bad "this one copied the other" way. Both of these series are very good in my opinion (many say Black Cat's manga is much better than the anime) and are particularly worth picking up.
Both series focus on a group of people using their abilities to stop criminals, with an overarching storyline of group vs group. They have similar feels in tones and character relationships.