OneKartVita on 24 March 2016
Look at the bottom graph posted by jranation from shadow above. If ps4 can beat the ps3 peak this year it has a very very good chance. It might fall short but it's going to be close if that peak is beaten. there are a lot of big games to come 2017 onwards and potential titles like a version of a mainline monster hunter, plus it's spin offs.
On the western audience. I reckon nearly half the ps4 Japanese userbase play western games (not saying exclusively). There are millions of potential owners who are fans of the Japanese stuff but they won't jump on board until the games they want start rolling. And many will wait for the ps3 to stop getting versions.
