Guys remember Demon Souls ran at a higher resolution than dark on ps3. I feel a combined effort with Sony Japan Studios will help FROM in the graphics and performance department.
I don't think very many programmers from Sony worked on Demon's. These are the technical roles. It is hard to tell how involved they were with Demon's outside of the two producers and the few technical roles that are not QA or marketing.
Technical Support Kenji Akiyama, Yihong Lin
Simulation Support Hiroshi Matsuike, Ryosuke Sakurai
Online Game Support Keiichirō Suzuki, Takeshi Hotta, Tomomi Nakamura, Motokatsu
Matsui, Ryota Akao, Hiroyuki Matsushima, Hideaki Tanaka
In contrast to to the large programming team from software.