The games that were pushed early on were third party multiplatform games. It only dawned on Nintendo that they should announce their own games when they made their emergency Nintendo Direct in January 2013.
The Wii U wasn't the only console that you put in the wrong category. The NES was an unconventional console.
It's just that the game's they pushed during the early life cycle of the WII U had a more unconventional style to them. You didn't see them mass-advertising COD or any game that is considered truly conventional but they usually advertised third party games which made a lot of use of the gamepad and there own games such as NintendoLand which are far from conventional.
Now let's say that we also agree that the Nes was an unconventional console. How does that lead us to predicting the possible future popularity of the NX.