The difference between the systems of attributes between the Inca and Aztec civilizations are;
Incas: They paid tribute to their god by means of offerings and animal animal sacrifices but very rarely there was a human sacrifice,
The human sacrifices had no cuts, they were asleep and mummified, they were generally children.
Aztecs: For the Aztecs, human sacrifice was important, the sacrificed were skinned after death, they were obliged to dance before dying, they took him to the temple and took away his heart.