I didn;t say that it didn't - in fact, the reality was mass casulty events where common in a way that is unthinkable. We do _ in fact_ have plenty of mass graves for colonists. The lack of evidence of the same on the American Indian side makes me skeptical of the whole narrative.

i think it's quite likely that the casualties where in similar scope across two different civilizations, but that the colonialists advantage (if you can call it such) of excess population and higher density of settlers, meant that the colonialists simply outlasted a far smaller population group.