4. The Fight Won't Be As Exciting
The thought of Batman fighting Superman on the big screen is undoubtedly awesome. It's rumoured that they come to blows at least twice, and having two icons go at it like that in a movie could result in an image which goes down as one of the most iconic in the history cinema. Despite all of that, it doesn't seem unfair to say that it just won't be anywhere near as exciting as seeing Captain America and Iron Man fighting each other for the first time. The relationship between Tony Stark and Steve Rogers is one of the most interesting in the MCU, and while they've never really been friends, it seems they will be come Avengers: Age of Ultron. When things reach a head and the first punch is thrown, it's going to be an emotional moment (especially as we'll see their resentment and disdain for each other finally come to a head) which Batman and Superman's first clash will be lacking in.