None of the games coming at the end of the year are compelling enough on their own to buy a system IMO. But, the combination of all the titles coming if advertised as such, should at least get most Nintendo fans on board, probably others as well.
For example, if you told someone that Mario was coming and they saw Mario in a cat suit. Or you told them Zelda was coming and the saw it was a remake of a Gamecube game, people likely aren't going show much enthusiasm.
However if people were told in one hit that Zelda, Mario, Sonic, Donkey Kong, Pikmin, Wii Fit, Wii party, Scribblenauts, Deus Ex, Assassin's Creed, Watch Dogs, Rayman, Splinter Cell and Batman were all coming before Christmas, it sounds like a much more attractive package. This, in my opinion, is how Nintendo needs to advertise the Wii U line up this holiday season.