User blog comment:DiegoAnime3000/Not really spoilers/@comment-6830001-20140414115828/@comment-6830001-20140414172201

It's similar but last year, the first episode was volontarily showed by RT to hundreds of people who paid to be there and the intro was recorded to what was thought to be only a spoiler for a couple of hours for the rest of the world (2 weeks though). Last week, it has been leaked (how ?) almost 3 months before the show. Both times, only the intro was spoiled in video but the circumstances were radically different...

I think PAX East is bigger but RTX is related to Rooster Teeth. I'm not sure of the differences between the two since I'm far from it and not much interested in it.