for me Duodecim works the same speed as the normal Dissidia...., it seem faster because there's a lot of new stages, and the majority of then works at good speed and 4 of them run the game at full speed, so yeah Duodecim runs better
but if i can guess, no Type-0 will not work on JPCSP in the release(like all Square Enix new games i think), but after a time it will, if you wanna play it that badly try first the PSP ^^, and yeah, yeah i know nowadays its better to play on the emulator we can put filters an full screen and some games became very good in it...,but some still became laggy when in full screen
but if i can guess, no Type-0 will not work on JPCSP in the release(like all Square Enix new games i think), but after a time it will, if you wanna play it that badly try first the PSP ^^, and yeah, yeah i know nowadays its better to play on the emulator we can put filters an full screen and some games became very good in it...,but some still became laggy when in full screen