Why is it that Wii U's name failed it but Xbox One's didn't?

[zippy]

Mummelmann said:

zippy said:

If gamers are no longer interested in old Ninty IPs, how do you explain over 50million 3DS units sold.

To be fair; he said "most gamers" and not "gamers are no longer interested", and how do you explain that the 3DS will likely sell half as much as the DS lifetime if he doesn't at least have a point?

Wii and DS were a complete one off for Nintendo, I never thought for one moment they would replicate that success with Wii U and 3DS (although i thought Wii U would be doing at least 5 million more than it currently has). If 3DS tops out at 70 million plus, i would consider that successful especially factoring in a botched launch.