Capcom shocked many when they announced that Devil May Cry 4 would be going multiplatform, and the clear reason behind it was money. The Playstation 3 at that point simply hadn't sold enough for them to make much money, and releasing it on the XBOX360 allowed them to reach a wider range of audience. However it seems they're finally seeing the Playstation 3 as 'having reached full swing' and that too, thanks to MGS4.