Oh is is still up there even if he falls to #2. No question. He is part of that trio, anyone who says otherwise is crazy. Clearly the kings of the 80's/early 90's blockbusters with Spielberg's Amblin, Lucas's Lucasfilm, and Cameron still have much wider appeal than any super hero franchise could ever hope to achieve.
It was only a year ago people were declaring no one gave a shit about Spielberg/Lucas franchises, the kids only want Avengers. In all honesty I sort of believed it too, I thought Gambit was crazy in his Star Wars #1 & Jurassic World #2 for the year prediction.