Consoles:
1° Nintendo because now Iwata is looking for graphics and he will try to be unique again. If Iwata wants high quality graphics for the next handheld, I am sure they will try to make a powerful console too. The PS2 destroyed the Gamecube in sales, so Nintendo made an improved gamecube with something unique to destroy the PS2, and that's why the Wii isn't as powerful as the other consoles this generation. But it's not just about the graphics, as I said, Nintendo will try to be unique again and the only thing the wii needs now is a better hardware.
2° It's hard to say... Microsoft has money and much more experience than before, but Sony won't make the same mistakes again.
-Edit-
Oh and Microsoft is really becoming very important on the consoles, congratulations for Microsoft.
Essay Pro