A shitload of japanese games were ps3 exclusives last gen, mostly rpgs. Japanese people do want to support Sony, but Sony was the underdog last gen. Now that they are the undisputed winner this gen, I believe many Japanese devs want to scratch Sony's back.
I doubt Sony gave Capcom money for this exclusive, they have to watch their cashflows. My guess is Sony guarantees Capcom a sales number, let's say 6 million units. And then all Sony has to do is market the hell out of a SF5 ps4 bundle. With the momentum PS4 has right now, this is an easy win-win for both Sony and Capcom.







