The statement that accurately summarizes how the differences in military technology between the Spaniards and the Aztec and Inca affected their battles is:
While the Indigenous forces would number in the thousands at times when battling the Europeans, they were still no match for the military prowess of the Spaniards.
This statement highlights the significant impact of military technology, including the use of firearms by the Spaniards, which gave them a decisive advantage over the larger but less technologically equipped forces of the Aztecs and Incas.