No, Dead Rising was done 100% in Japan. It's basically the exact same team at Capcom who did Shadow of Rome on PS2, and a lot of the same guys who worked on the Onimusha games. The Wii conversion was outsourced, but still to a Japanese developer (Tose Software).
Dead Rising 2 is being done by a western developer though (Blue Castle Games). Capcom also used to have a US R&D team (Production Studio 8, who made the Maximo and recent Final Fight games) but they were shut down years ago.







