For reference: X360 = 1.0 and PS3 ~ 1.25
Wii U = 1.5-2 (achieved by using a modern but weak and cheap DX10 GPU).
X720 = 10 (achieved by using an equivalent to the Radeon 7850, heavily modified of course)
PS4 = 12 (Sony will make sure that the PS4 is slightly stronger than the X720, and it can be done for relatively cheap).







