In my mind, the OP is correct. Right now XB1 should be selling around 3:1 of the PS4 on Amazon.
Just keep in mind it's the 1st day when ACU bundles are out, and discounts apply on other bundles. Let's see how long all these stay on the chart like this.
I am almost ready to pull the trigger myself on one of these deals. The only thing is I keep looking at the games list and XB1 still has too few exclusives and that isn't going to change until end of next year.