I think this game looks very similar in terms of faithfulness to the the film and quality of the graphics as the LNBC world in KH1. To me, that means Square did an excellent job at mimicking the look without the help of the art director of the movie which Capcom hired for this game.
I watched the trailer on the Famitsu Capcom special DVD and I have a very strong Onimusha 3 feeling (not about samanosuke, the other character, is he also called Jack in O3 ?), the swinging moves are very similar.