Looters aren't recruited their criminals no one to equip them they are self-equipped with out a proper leader other than who's toughest. The looter even if a farmer and Recruit is a farmer. The recruit would get very basic training even if it was a day's training. They would be equipped.The balance of most high tier units is decent.
It's only high-tier ranged units, like Khan's Guard or Fian Champs killing more than 20x their number, that are an issue. Fix ranged damage to armor, you fix them.
A desperate farmer who is extremely poor.
Just look at looters. Nobody gives them any equipment when they join up. Yet they roam the world in packs using farming equipment to fight.