WILL BUY CONSOLE FOR F-ZERO. SORT IT, NINTENDO.
The Sonic and Mario games have sold well on the Wii (the casual market) granted; but I can't see the Mario and Sonic franchise being a system seller on the Wii U as the casuals don't even know the console exists.
It's not 1992 and no one will buy a console for Sonic. I say this as a fan. People who own the machine will, but it's not a system seller. Given the this deal want done out of friendship, I can't imagine it's a smart move for either.