How do you explain the awful ST's play for 2 yrs before it was exposed on MNF vs the Pats last season? Sparano's teams have faded at the end of the season for 2 straight seasons. He failed to have them properly conditioned to open this season and as a result, embarrassed themselves on national TV. Those are coaching issues, NOT ownership.
What I've noticed is that the good coaches command respect. Bill Parcells came to this team with a reputation as a guy who would come in and change the culture of this team. Even though he wasn't the HC, he was frequently at practices during this regime's 1st yr, but then he gradually phased himself out. The team's success seems to have declined in proportion to BP's involvement with the team. I think the 11-5 record during TS 1st yr was more a result of the players respect for BP than TS.
In professional sports everything is relative and TS is a relatively poor HC when compared to his peers in the NFL.