If this was the Xbox One over the PS3 in the same situation, it would be cries of...Amazon is only one retailer, or they had a bundle, or it was the week of a big release, blah blah blah.
So congrats, but it's so minor a victory as to not even be newsworthy, this is a 2 and a half year old console which has had sand in its gas tank from the beginning, you will only see it rise in amazon if it gets a major sale or if they actually release anymore big games.