Not only did the campaign scream authenticity (there were industry complaints that the makers had mistreated the kids by not telling them it was a ruse), but the execution was in lock-step with the brand attributes they were intended to illustrate.
Aside from draining financial resources, a flawed execution can cast doubt on management credibility, have a negative impact on morale, taint the brand, adversely affect external relationships, and cause a variety of other problems for your business.