The Bears had a great season, relative to their performance in recent years. But, let's not get too far out over our skis here in terms of how great they are relative to the rest of the league.
You know that line that losing teams have when they say that they were in a game until the end and either the other team made "one more play" than they did or "if the ball had bounced our way a couple of times, who knows what might have happened?" I'm not saying that line isn't true (at times), but I am saying that it also works in reverse for winning teams. For example, if the ball had bounced in the direction of the other team or if a questionable official's call, or non-call, had NOT gone the winning team's way, then the winning team would have been the other team.
You can apply that "logic" to a whole season as well as a single game. Given the fact that a substantial majority of the Bears' victories this year were by one score or less, glass empty kinds of fans and pundits might say that the Bears could have VERY easily finished the end of the season at 8-9, 7-10, or worse and not made the playoffs. And they wouldn't be wrong.
Despite the above, I am a realistic glass half full kind of fan. That is to say that I believe the Bears made some great improvement from last season, and they also improved greatly over the course of THIS season. The realism I want to inject here is that only time will tell if the Bears have truly turned the corner from mediocrity to greatness (or at least above averageness). I am hopeful that they have, but only time will tell if this year was an aberration or the beginning of a run of sustained competitiveness at the highest levels of the league. They need more games under their belt to prove more convincingly that they belong in that highest level.