None of these lessons are news to anyone, but it doesn't change the fact that because things "can" be overcome it doesn't mean it is normal, or expected or as doable in all cases. The Packers did a great job, but their situation is not identical among all teams. Some can get by with less of a running game than others, some have better depth and can overcome injuries better than others etc.... The Cowboys just have to do a better job with what they have and in preparing for the possibility of injury and other problems.