>>724904979
Sure, but that's just one technological innovation, the Mesoamerican and Andeans might have only smelted Bronze, but they also had giant cities on par with Classical and medieval European ones, complex waterworks engineering, really developed botanical, agricultural, medical and sanitation practices and sciences, etc.

I get that some of that is covered by population and other in game metrics, but it should have had a decently large sway in tech tier too (plus EU4 drastically undercounted what their population should be, IIRC, or at least EU5 did before they updated it recently and even then did a sloppy job with said update)