He is far more of an open book and more sincere than what you'd get from the documentary.
I was a bit surprised that some of his responses weren't more doctrinal, like why the idea of disagreeing with prophets and how they "can't lead you astray" wasn't expounded upon more... but then again it's just an interview, not a doctrinal thesis. And maybe it's just me, I've written an entire essay on why I think the infallibility doctrine is anti-Christian.