Statistically they had one of the better Ds in the league. It was based off playing bad teams. The only good offenses they faced before our game was GB who put 30 on them.
YAC is what teams like KC and Ravens and pretty much all good teams live by. You just arent used to it because before Shakir last season, nobody got any YAC. It was catch and tackle.
Edit: oops. meant to quote the other guy, sorry.