Can't speak about the others, as I'm not familiar with them. I'm also not gonna do all the critical thinking around here while im buzzed on a saturday night. Do your own research.
>A brief examination of the materials did not support the claim of cultural artifacts or of bone processed by hominins. The assemblage from the site can be much better explained as a natural deposit, likely disturbed by other mastodons soon after the death of their comrade. Given the brevity of our study, it is important that future studies examine the data, fossils, and lithics to test the initial hypothesis. Additional excavations are also recommended.
Doesn't sound super conclusive.