I actually had a chance to ask GSP about it, and he had this to say: "Johnny 'endricks is the most dangerous fighter I've faced in my career."
To be serious though, no, I don't think he has much of a chance. They will probably sell the fight on "This guy knocks everybody out within seconds and he is impossible to take down" but in reality, he will likely be 50-45'd like the rest of them.
He absolutely deserves the title shot though. There is no question about that.