Yup, Naruto is nowhere near at a threat of getting that kind of treatment from WSJ...
Also, if you look at the rankings of Bleach this past year, you'll see that its rankings have gotten quite bad and sometimes they are even worse than the rankings of the ones getting cancelled, but because of Bleach's past spot in the so-called "Big 3" and its high sales rates, WSJ keeps publishing Bleach and will probably let the Mangaka finish it without cancellation. Sadly, new series don't get that kind of treatment...