Xbox 720 is going to be killer.

[Viltsu300]

Playstation 4
CPU: AMD "Jaguar" 8-core 1,6 Ghz
GPU: AMD 1,84 TFLOPS
RAM: 8Gb GDDR5 176 Gb/s

Xbox 720 / Xbox Loop / Xbox 8 / Durango
CPU: AMD "Jaguar" 8-core 1,6 Ghz
GPU: AMD 1,23/1,43 TFLOPS
RAM: 8Gb DDR3 68 Gb/s + 32Mb ESRAM 102Gb/s

Comparison:
CPU = TIE
GPU = Winner Playstation 4
RAM = Winner Playstation 4

Result:
Playstation 4 will be best console.

Sources:
http://www.gamechup.com/nvidia-ps4s-gpu-is-more-powerful-than-xbox-720s-gpu-but-3x-slower-than-titan/
http://www.extremetech.com/gaming/151367-amd-launches-radeon-7790-meet-the-xbox-720s-gpu
http://www.playstationlifestyle.net/2013/03/02/ps4-memory-vs-rumored-xbox-memory/
http://bgr.com/2013/04/09/microsoft-xbox-720-amd-processor-424140/
http://www.emirates247.com/news/emirates/microsoft-xbox-720-vs-sony-ps4-which-gaming-console-is-right-for-you-2013-03-29-1.497801
http://www.pocket-lint.com/news/50266/xbox-720-vs-ps4-comment
http://samgurschick.hubpages.com/hub/ps4vsxbox720
http://www.neogaf.com/forum/forumdisplay.php?f=2