What Went Wrong?

It was barely more powerfull than the PS3 / XB360, and launch very late into the gen.
Its price to performance ratio wasnt great ( this factors into buyers remorse ect, if you know your paying alot for little)
It had dry spells without games, even though 1st party titles were "okay" (alot were below nintendo standards) it was lacking 3rd party.
Marketing + name was bad.... some people though it was a add-on for the Wii.

Alot of things went wrong.