Between this Vero post and the other cut Superman scenes (which revealed the long-rumored black suit and his exchange with Jeremy Irons’ Alfred), it is pretty clear that Supes and his supporting cast had far more substantial roles in Justice League in its earliest incarnations.
Justice League was trimmed down to the essentials when Zack Snyder left the project, and Joss Whedon took his place, and it looks like Superman (Henry Cavill) was the character who received the bulk of the trimming.
It is interesting to note that there was more Ma Kent/Lois Lane material that didn’t end up in Justice League because that seems to line up with the themes of other scenes that never made it to the movie.