Im not even sure they will even match the performance of the Xbox 360 with the Wii HD.
Actually scratch that, I don't think they will.
Chips are getting hotter and hotter, if they are targeting a specific thermal profile of say ~20-30W, they may not be able to release something as powerful. They've also aquired a penchant for simple so I doubt it'd have more ram than the 360 as they'd probably target having fewer ram chips and simplify their design.
Tease.







