Ugh, the dreaded Amazon Hourly Bestsellers thread. The bane of my existence.
We'll have to wait a day or two to actually see if this has any real affect on sales. It may end up just being a normal bump in sales, with little to no lasting affect. The reason I really despise threads that use this kind of data. At least wait for an update in the monthly sales to see what the drop is doing for overall sales.
Personally, I think all Sony will do (and all they really need to do), if this does start a continuous boost for XBO, is bundle a game or two for free at $399. And I'm sure there will also be a $349 Black Friday Bundle, which will see PS4 sales skyrocket. I just hope Sony has enough stock ready.