The statment that Little Orbit made said the following: "There were a number of reasons ranging from quality issues to lack of retailer support, but know that we didn't make this decision lightly," the statement goes on. "We are a fairly new company, and unfortunately both of these platforms presented challenges we couldn't overcome. Please accept our sincere apology."
However, the game is still available this November for the Xbox 360, PS3, 3DS and PC. Now, I don't think it's actually a big loss for the WiiU, because Nintendo nowadays isn't doing so good and so many titles for the WiiU were cancelled. Even though the WiiU seemed to be the winner at last year's E3, it's still not doing good. What Nintendo must do is bring back old titles with fresh new storyline and gameplay.
As for Young Justice, well, I do love Young Justice in the same way that I loved The Avengers: Earth's Mightiest Heroes. I got upset that both shows were cancelled after two seasons, and they were both badass. And you should know, I am not just a gamer, I am also a comic book fan as well.
I sincerely do hope that even though the game doesn't look as good, I am still hoping that Young Justice returns someday, somehow. Because the ending of season 2 left us hanging and asking questions.
God Bless and Play Hard Gamers!