Ethomaz's Dismantling the Myths: Amazon.com's Best Sellers is Not Accurate to the Predict Overall Hardware Sales in US (Checking: Accuracy with Software)

[Aura7541]

I think it depends on how big is the disparity in the best seller's list between the PS4 and XOne. If it's small, we don't know for sure which system has outsold which. However, if it's a huge disparity, then it's plausible that for sure one console has outsold the other.