Our problem isn't the 7%, it's what the front office puts around that 7%. NFL is a team game, so if the team has weaknesses that can be exploited, it's tough to win, especially in the playoffs when you are facing other teams with several top players but also better players around them.
For example, if you have strong ends (which this rankings says we do) but are weak at tackle, where do you think other playoff teams are going to attack? They are going to attack the weak links. That forces you to have to adjust what you are doing to protect the weak links and leaves you more vulnerable overall.