If Batman took the place of the leads in each of the movies, I wonder if he would be able to defeat the villains. Like Batman was born into MCU and has established the same batfamily and web. MCU heroes are all in hiding or dead.
For example, let's say Batman prepares to go on an expedition to kill a living planet. After 3 months of preparation, the Batman is teleported to the surface of Ego. Batman's is aware of the core kill spot. Can he fight off Ego, reach the core, and kill a celestial?
Batman takes the place of the defenders and must face all 5 fingers of the hand and Black Sky at once.
Batman sees Abomination reeking Havic in New York, grabs as much as he can prepares and flies over in the bat plane to stop him.
Batman and the batfamiky vs the Killan and the army of extremist goons. T
Batman VS Ultron somehiw. Hacking battle?
Batman trains under the ancient one and tries to get through Dr. Stranges movie.
Batman must figure out how to defeat Hela in Asgard...
And so on.