No one really wants to spend 400-500 dollars for the next generation when the current generation can go for a few more years. There is still moar crying to do. This isn't quite the upgrade that the Ps2 to PS3 - Xbox to 360 was either.
“Although we’re very excited about Xbox One, we remain dedicated to Xbox 360 now and for years to come. In fact, we are expecting some of the greatest blockbusters of 2013 and 2014 to come out on Xbox 360.”