Alright hear me out first. I think that not very teigu has a trump card because its ability is enough.
With teigu like esdeaths, lubbocks, pumpkin, stylish etc They leave room for creativity so through training you can create a move that you have under your belt. Esdeath literally creates ice, Lubbock can do anything with his strings, Leone found out that through being in an inhanced state that she can speed up how her cells recover.
While teigu like March of the dead, or murasame, Incrusio, Esctasy, have abilities that can be used but the users own skill in combat plays a larger role. Like Kurome can bring someone back to life, she doesn't have too. She could fight solo with it if needed, sheele doesn't need to use that light, but it's an ability that her weapon has.
You feel me?
