New use for armor effective weapons?

Frederick Cherche would be best thx to high atk and deathblow abuse.
It should work atleast with 100%to kill advantage Color and 90% to one shot own color. Deathblow +atk nature should be enough only disadvantage color should you dodge or finishing weakend.
Still i must say Armor Emblem is rather to say one of the easier match ups unless you get terrible map layout example ship map.

Or just, y'know, the Wrazzle Dazzle units. They work great.

But seriously it would be cool to have builds other than the standard Brave builds for them.

I'm working on a brave axe death blow Frederick since I pulled a 4* +atk/-res IV...too good to pass up but I respect your post.