What Bloodworth said.
PN03 and RE4 are exclusive by contract.
Viewtiful Joe and Killer7 are exclusive, BUT Capcom can port them later if they wanted. However, IF it happens it won't be until way after they are released. There are no plans as of now.
Finally, Dead Phoenix is sorta...dead(ish). The game hasn't been cancelled, but Capcom says there isn't anything new to show about it. Apparently it's just chugging along at the bottom of the priority list. As for exclusivity status, same as Joe and Killer7.