The Wii U is more powerful than the 360 for starters. We don't know how many GFlops Latte pushes yet, and even if we did your sig isn't taking into account the advantage that fixed functions will give it over Xenos (and the 720 and Ps4 GPUs too). Xenon is IOE not OOOE, 3 times more CPU cache and Latte has more than 32MB of eDRAM as well as SRAM being present.
The RAM in the 360 is also GDDR3, not DDR3.
If you're going to criticise a console's power in a signature you should at least get your facts straight.