Yeah, 60fps is always better, but 30 is generally fine. I mean pretty much every racing game on the last gen consoles was at 30fps and they were perfectly playable (and if you need a high framerate anywhere, it's twitch based shooters and racing games). Personally I wish more developers would go for framerate over resolution and graphical fidelity (I believe Battlefield Hardline is doing this, hence why it's gonna run at 720p on X1 and 900p on PS4) but that's certainly personal preference.

The framerate discussion surrounding The Order was just stupid. It's fine at 30fps, and favouring fidelity over framerate is a perfectly legitimate choice. So I dunno why they tried to say it was to make it more 'cinematic'. No, if you wanted to make it cinematic you'd make it 24fps... which you won't do because it's borderline unplayable. I almost wonder if, because it's an exclusive title, Sony forbade them from using terms like "technological limitation" or anything that might make the PS4 hardware look bad.