OK. They were #2 in yards allowed. They were #18 in points allowed. Let's talk about that.
They played the #3, #4 (x2), #5, #8, #9, #11, #13, and #15 offenses last year. They were 0-9 in those games and they allowed 247 points in those games. 27.4 points per game.
They also managed to lose to the #23 and #26 offenses while surrendering 24 points per game in those games (27 and 21 respectively.
The offenses they beat were ranked 19, 23, 24, 26, 27, and 31.
What this means, in short, is they lost to every single average or above offense they played last season and also lost to 2 poor offenses. But you're right. I'm revising history to make them sound bad. In reality they were tearing it up.