Shane Black took over helming duties from Jon Favreau for Iron Man 3, and compared to the previous two Iron Man movies, the threequel definitely felt different.
But even then, Downey had enough pull, both as Iron Man 3’s star and the guy pretty much anchoring the MCU, to change lines that he felt weren’t working.
Judging by what Black said, it sounds like he adopted a similar mindset when working on The Predator.
But as Black mentioned to CinemaBlend’s own Eric Eisenberg during a set visit for The Predator, even some of what was originally written for Iron Man 3 didn’t make it into the final cut, as Downey kept asking for certain moments to be rewritten right then and there.