As someone who has a good gaming PC, $499 is a tough sell for either XBOne or PS4. Is access to a few exclusives worth that kind of investment? Especially when that $499, put towards a new graphics card will deliver better performance in multiplatform titles than either are capable of.
I'd assume most don't have a PC they can just throw a new graphics card into. So that comparison isn't really apt for a lot of people. For those that do, it is a tough sell, but console exclusives have been the only real reason to jump from PC to console anyway.
It's interesting that the new 360 isn't getting a price cut. I guess they want to continue to sell it for another year or so with Xbox One sold as the premium device.