Well, this goes back to my central point in defending Sullivan, which is a defense of coaches in general...
NHL coaches have less of an impact on games than people want to admit, especially other coaches.
The reason NHL teams change coaches like they change underwear is because GM's use coaching changes as cover for their own failures in constructing a quality, competitive roster.
Also, hockey success has a lot do with luck - quality of the competition, players getting hot, even actual puck luck.
The key is to find a coach who connects with the locker room and can get players to follow a process on a consistent basis. I think Sullivan, Rod Brind'amour, Jon Cooper and Jared Bednar do that as well as anyone else in the league. Those are my top four.
The tricky thing is evaluating a team when the process is correct but the results fall short. And that's where we are with Sullivan. The results haven't been there. But is the process working? With the right personnel, I think it is. Maybe I'm wrong.