Well, for one thing, these rumors are only about the next Playstation, not the next Xbox too. They are only rumors and they don't sound all that real to me. Also, the Wii U is not twice as powerfull as the PS3. It just isn't.
I take it you didn't A) click on link or B) read my other thread covering the rest of the rumors found at the link.
As for WiiU... yes it is 2x PS360. It obviously is.