I've never even seen the Ultimate Cut, but it sounds like slightly longer takes of the CIA shooting in Africa and the flashback of Bruce's parents getting shot are what got it to a soft R.
Yeah, most of the Ultimate Cut is actually dialogue and added scenes that clarify out the plot, a huge part of it is Clark and Lois doing real investigating, that's gotta be like 20 of the minutes. The CIA shootout is like the only extended scene of any sort. Also Superman saving people after the bombing is a bit longer.
Like none of the Batman fights or the Doomsday fight are any different or longer that I recall. Maybe the blood in the warehouse fight isn't CGI'd out? It's in the trailer version but not in the theatrical cut, it might be back in the Ultimate Cut. It's still only part of one and a half shots if it is.
That was the funniest part I thought of the Ultimate Cut, they advertised it as a more epic edition and how it was the Snyder MAX version. And all it does is add the
why Superman is willing to fight Batman plot* back into the movie.
The Snyder MAX stuff was already in the movie, it's Luthor rambling about Gods and angels and shoving Jolly Ranchers into dude's mouths.
*Clark goes to Gotham to investigate Batman, discovers Bruce has basically become unhinged thanks to Luthor's manipulation in his quest to stop Clark. At the same time, Lois is uncovering Luthor's plot and discovers the manipulation, that's how he captures
her. In the theatrical cut it's cause Luthor just goes "LOL, gonna kill Lois and Martha who I grabbed off camera if you don't" and so Supes goes and gets his ass beat.