Wii U is handheld.
Wii games can be played online with the Wii U. However, there should be no difference in the connection quality between the two systems.
The are many differences between the Nintendo wii u and the Nintendo wii. The Nintendo wii u has better graphics, larger storage space and it is slightly bigger in size. However the biggest difference is that the wii u comes with a gamepad and supports chat.
The Wii 2 or Wii U will have a new controller with a touch screen embedded in it. It will also be more powerful and able to run at High Definition.
The Wii U is compatible with Wii games. There is no difference in the disk sizes. (Be aware that the Wii U does not support Gamecube games.)
nothing.
When doing a system transfer between the Wii and Wii U, all data on the system is transferred. This includes save files.
the 'solus'
There is no difference they are all the same as they are located in the same region!
the deluxe has more memory
no they are both pal wiis
Super Mario Kart is not for Wii.
Well, there is a color difference. And the normal Wii comes with Wii Sports only. (May vary because some come with Wii Sports Resort) but the Red Wii comes with a Mario game and Wii Sports.