Right now, probably western.
The difference for me has to do with franchise management and progression. As much as we all rip into western publishers, many Japanese publishers seem to be run by people who actively want to bury once popular IP. Sometimes when I think of companies like Koei, Capcom, or Sega, my hands automatically curl into the "I want to strangle someone" position.
As an example, when I compare two of my favorite new IP from last gen, Borderlands and Valkyria Chronicles, there is such a clear difference in how they were handled. There is no doubt in my mind that Borderlands 3 is going to be awesome. Valkyria Chronicles, on the other hand, is JUST NOW being released on PC, never mind the situation with its sequels.
Persona 5 is going to be amazing but, when I really think about it, I have trouble coming up with many Japanese franchises where I have faith that the next installment is going to be as good as the last.
