We do see it differently. I think the LAST thing you want to do to a new coach when you hire to replace an underachieving predecessor is to saddle him with unrealistic expectations. A four game improvement whether from 0 to4, 4 to 8, or 8 to 12 is huge and not to be expected, because if there was any rational reason to expect it you wouldn't be firing your coach.
Maybe, in a rare situation where a long-term, very successful coach retires at a point where he bequeaths a roster loaded with starters who will be returning (including a good QB), it would not be totally unfair to expect such huge improvement. Even then, though, one should not be upset if it doesn't happen.
I didn't get down on Dana when his first year was no real improvement over Stewart's. It wasn't until year 3 when it was clear things were moving in the wrong direction that the doubts began and it's not until now when we show no signs of escaping mediocrity that the doubts are turning to a belief it's put up or shut up time.