Sark brought back some sizzle to the program that needed some sizzle ... problem was that by Year 3, the sizzle wasn't enough and people expected checks to be cashed and the checks weren't getting cashed.
It's been beat to death as often as Kim beats a banana, but Sark's proven himself over time of moving up the job ladder without putting the work in to become a master at what it is that he was hired to do. You can get away with that charade for so long, but at some point, there's not another ladder to go up. He'll either get exposed at USC or he'll end up jumping to the NFL and then getting exposed there.
The reason that those that are smart are excited about Petersen is because he's put in the hard work, he's put in the sweat, he's said his prayers and ate his vitamins brother. You have someone that has a belief in the way to get things done, has had success with it, and has a staff and laundry list of former players that swear by what he does. Results matter and he's got the results to prove that whatever it is that he does works.
One thing that I was in a way disappointed wasn't touched on during the article was the whining and crying about Petersen's assistant coaches and how they aren't upwardly mobile like Wilcox in the sense that he's priming to be a head coach. Petersen's assistants seem perfectly fine with hitching their coaching wagon to him with the job stability that that includes and taking on challenges.
Not everybody is a future head coach. Some realize that that's just not their cup of tea. Gilby was a shitty head coach. I'd hire him every single day of the week to coach the OL or even be a OC. Getting a coaching staff that meshes together, has everybody's back, and works towards a common goal is just as important as it is to have 85 players doing the same.