The Xbox 1 is purposely oversized

[theprof00]

Chris Hu said:

Well did you actually read what I said.  It still will be due to actual die shrik unlike the current models of the PS3 and 360 which where just redesigned to save some money.

Die shrink is only coincidentally occuring at the same time.
The future xb1 slim will be to make money, the ps3 and 360 were to save money. Change your viewpoint, and it'll become clear.