The Sun journalist tweeted to say "my exclusive interview ...", so despite being The Sun, they probably are using the term legitimately. That just has to mean they have a story before anyone else, or their guy had some one on one time with Andy, even if it was just a couple of minutes. It could just be that he got first sight of an extract from Andy's book.https://twitter.com/CharlieWyett
That doesn't mean it won't be picked up by someone else tomorrow, or even later today. I generally go with the theory that the good stuff gets picked up and repeated, but those paywalls don't half annoy me. I don't mind the ones that let you have a certain number of visits for free first. I think it's fair enough if you are a regular reader you can pay, but if all you want to do is to check the odd story, it's a bit much. More so when the money is going to Murdoch.