Let's hope the Guru is flat-out wrong.
The "Guru" was flat-out wrong about the movie's opening weekend, why should he improve?
The kind of "prognostication" he's been doing here is sleight-of-hand: repeat what the conventional wisdom and the trend shows, and most of the time you'll be right. When the trend turns the other direction, follow that trend without blinking as well.
Stock market analysts do a lot of this; if on any given day you predict that things will be a lot like yesterday, you'll sound smart most days.