It might sound a little strange but Auto-Resolve gave me a MUCH better outcome than what I could have gotten via regular combat against an Ashwake Dragon.
My army consisted of my Sovereign, Asha, 2 "Frost Mages" (Regular mages using the rank 1 Ice staff), a low level Shieldman, a low level bard and a low level Torch Bearer. After playing out the first round the Dragon killed off my Sovreign, Asha and the Shieldman with one firebreath so I just auto-resolved the battle knowing I would lose. Much to my dismay (And pleasure) I won the battle and sustained no loses beyond the original three.
Reloading my save before I encountered the Ashwake Dragon I battled it again; this time using Auto-Resolve from the get go. I managed to destroy the Dragon without any loses this time. I know auto-resolve is limited in the outcome but it seems a little strange that it actually gave me a better result than what should have happened.