Beginning at the 3:18 mark
For those who don't want to watch, Phil Spencer goes on Late Night with Jimmy Fallon to talk about the Xbox One, and when they begin the Forza 5 segment, Fallon asks if its been created for Xbox 360 and Spencer says no, and that Xbox One is taking advantage of 3x the power of the Xbox 360.
I'm thinking he may have messed up his words a little there, but if its true than Wii U is pretty good in terms of power I guess! Keep in mind that Xbox One will feature Cloud Computing though...
But here's where Sony triumphs
Beginning at the 0:21 mark
The System Architect Mark Cerny says that they targeted 10x as powerful as the PS3. Not sure if this means it actually is, or if that was a goal and they hid the fact that they couldn't achieve it but based on what we've seen it's likely that it is.
Edited by Professor Genki!, 23 June 2013 - 02:21 PM.