What are the primary stats of each of your followers? The Enchantress is obviously int, but the other ones I'm not sure about.
The primary attack stats of the followers can easily be tested by swapping in specific stat boosting equipment, but you don't need to do that as the game clearly tells you when you mouse over their stats in their equipment menu that they are as follows:
- Templar: Strength.
- Scoundrel: Dexterity.
- Enchantress: Intelligence.