There must have been more disagreements than agreements for him to leave otherwise why the big issue of who has final say in the decision making process? Can't imagine that money would have been an issue.
The press conference is available as streaming video on the KC Star's web site: Pioli mentioned personal and professional factors in making the decision to move on.
1. KC and the Hunt family were considered a terrific opportunity for Scott by the Krafts. Basically, out of all the GM opportunities he's been exposed to over the past few years, KC was the best opportunity to work in a owner/GM relationship that was similar to NE's.
2. His daughter is 5. If he was going to make a move, this a great time to do so from a family stability perspective. Short of ownership, Pioli has reached the top for a personnel man in the NFL. The KC job came along at a good time for him and his family, especially if he's successful and can settle in for a long term gig.
3. Dallas Parcells Pioli has family in the KC and Wichita area from her mother's side. Scott gets as close to a 'Kraft-like' ownership as he can, and Dallas gets a family network to enjoy with her daughter. I've bounced around the country in the service and in college and I agree with Piloi that Kansas is a good place to raise a family - I'd take it over Seattle or Cleveland or NY or Dallas, etc. If you're going to leave Foxborough and environs for a new job, KC is a good choice.
I loved what Scott said about his friends in NE and how he had no intention of hurting them in response to a question about bringing in any other NE personnel to build his staff. He made it clear he wished NE well and the only time to do otherwise was when they played KC. Good luck Scott and KC, time to put out some healthy branches on the Belichick tree.