From my experience the units in general are all trash. They're mostly just "Cheap" troops which can often only be upgraded once or twice before hitting a level cap, and on average so far at least for now their statistics in general are poor.

They're almost not even worth using in short, they're cheap, so they're also not very effective either.

Yea i can relate you two that but as i say up there Sados units are in general cheap samurai and i find them as the best ones, but i havent checked out the temples in the middle of the map yet. But in my mind they are cheap mass produced veteran units... sorta.