Adean is pretty similar and has a large availability win, enough said. Azel has an even larger availability win and beats him in combat by a good amount even if Azel is not promoted yet, and then once Azel is promoted he's actually a pretty good unit. Claude is mostly just late-generation staff user. If that's good enough to keep Claude out of Low I'd say most of the other staff-users need to move up.
Fire Emblem Genesis