It wasn't a blunder at all, he played it correctly. That MAX level Daarg Deadblast has weapons training, so Baakjira and Almo Cambio had 4 magic attacks. Still can't believe how I won that battle.
I don't have Grenadier or Sparkes, but I do a similar setup with Exploding Rats and Exploding Dwarf with a Melee Mayhem rule, even better if it is paired with Equalizer.