Man, say you made the compromize and targeted 30 because the consoles could not handle any better... don't insult people's intelligence 
Also, taking Rachet and Clank as an example is pretty bad, this series was destroyed in great part because of the frame rate drop, it's no longer responsive and fun to play!
So, unless you start making heavy rain or some card games 60fps is the ideal, 30 just works and as they also said in the interview, it's much harder to hit 60... so if they don't want to or can't make it work, just say it, don't act as if 30fps was some kind of gold standard, this is a workable compromise, that's it... like 900p, it's not optimal, but it works and your game can still look good (however it will not win image quality prizes when looked at on 1080p screens... it's not native after all).
