I didn't feel like I watched the entire movie after watching the Winter Solider or GoTG trailers. (I don't remember the Iron Man 3 ones) One of the reasons why I tend to like DC movies is because they have strong villains but they look godawful in this. Lex Luthor is.. let's face it, TERRIBLY miscast and Doomsday's design is uninspiring.
I would say have another look at those trailers and think about what happens in those films. That's certainly the case with Winter Solider. GoTG might be a bit better at it but to be honest I haven't seen that film as often as the others but for certain the big battle from the end of that film is certainly in that trailer.
I'm still waiting to see how Lex evolves. Personally I would have liked a version from the cartoon that was voiced by Clancy Brown. That's my Lex as they say but I'm open to new versions. I don't think we've ever gotten the mad scientist Lex in live action and I think that might be what we're getting here and that's a different Lex compared to just the straight up businessman version.
I still believe Doomsday's look evolves over the fight and they're still holding that back.