I replied elsewhere but:

- Gunpowder and steel had essentially nothing to do with Cortez's victory.

- The Aztecs did not see the Spaniards as Gods

- Smallpox played a role at the very end but had little to do with Cortez's victory.

- They leave out the primary reason Cortez won (his ability to build a coalition of native people who hated the Aztecs).

- They leave out the secondary reason Cortez won (superior European battle tactics).

- They ignore the fact that there were Europeans fighting on both sides (a delegation was sent from Cuba to stop Cortez; they were the ones that actually brought the smallpox not Cortez).