If you can't decide which version of Devil May Cry 4 - Xbox 360 or PlayStation 3 - to purchase, the official Capcom blog has posted the above GameTrailers video to indicate that there is no difference between the versions. Glibs the poster, "Well, the corporate answer is 'You should buy both and give one to a friend. Perhaps a third to put under your pillow,'" later adding, "As I've been telling people for months, there ain't no difference between the two."
One major deciding factor - load times - is not addressed in the footage. If one version takes 20 seconds to load a level and the other takes 2 minutes, then all else equal, we know which version we want to pick up.