The truth is that the natives did most of the eviscerating. Literally.
The body count heavily favored the Indians, from the very beginning until the later 19th century when technology finally made some difference. They were fearsome.
The Indians were rarely defeated in either open battle or the constant guerrilla war. They were out bred and out-immigrated, and thus outnumbered. Euro-American losses could thus be replaced, while the Indians, living in a subsistence economy with a low population replacement rate, could not.
“Euro-American losses could thus be replaced, while the Indians, living in a subsistence economy with a low population replacement rate, could not.”
That’s it in a nutshell.
And now the mescins and muslimes are out-breeding and out-immigrating whites. California is already lost.