Here we go! Before we get started, I would like to say that this is a Movie duel, not the characters themselves, so I will be crediting these films with the quality of the film, the worldwide box office success, and the Villain! Also, this is all opinionated, who'll have your say in the poll and comment section at the bottom.
Round 1: Superheroes
A Demi-God, a Super Soldier, and a billionaire!
We start with Captain America. Now in the Modern World, Cap is gifted Super Strength and Super speed due to the super soldier serum, also equipped with a Vibranium/Adamantium shield, he is able to take down small armies of top soldiers, not bad to have someone like that on your side!
Next up is Thor, the demi-god and prince of Asgard, and the leader of the Asgardian army, is capable of flight and control of weather due to the power of Mjolnir, the hammer equipped by Thor, the hammer is what is left of a dying star and can only be lifted by Thor himself.
Last up is Iron Man, the genius, billionaire, playboy philanthropist! Tony Stark built an advanced version of his Iron Suit to further protect his American army and himself. The Suit has multiple high-tech missiles, the power of flight, and increase of strength in hand to hand combat.
Winner: Thor, despite what happened in the Avengers, Thor is more than capable of beating the other two. And took on more danger in his film than the other films.
Round 2: Plot
The story-line is what makes the movie!
In Iron Man 2, with the world now aware of his identity as Iron Man, Tony Stark must contend with both his declining health and a vengeful mad man with ties to his father's legacy, admittedly, the first Iron Man film felt much stronger in plot than this, this was simply made as a prequel to the Avengers.
In Thor: The Dark World, when Jane Foster is possessed by a great power, Thor must protect her from a new threat of old times: the Dark Elves. This is another movie plot that falls behind its predecessor, in my opinion, unnecessary overuse of humor and lacks Relation to the main characters.
Steve Rogers struggles to embrace his role in the modern world and battles a new threat from old history: the Soviet agent known as the Winter Soldier. Unlike the others, this film improved on its predecessor. Using politics as the main plot point can be risky, but there were so many layers to each character and the plot, that the moving parts of this film feels very real, and therefore more relatable.
Winner: Captain America: The Winter Soldier.
Round 3: Love Interest
The girls are always the motivator!
Peggy Carter: A former officer with the Strategic Scientific Reserve, a founder of Shield and a former love interest of Captain America. Sadly this woman was only in the film for one scene, so it is very difficult for her to count, and there was only flirtatious moments with Black Widow, not a love interest, so really, there is not one in Captain America: The Winter Soldier.
In Thor: The Dark World, Jane Foster is given a lot more screen time with Thor, allowing us to become more fonder of the relationship between the two characters.
In Iron Man 2, Gwyneth Paltrow's Pepper Potts is also a lot more screen time with the hero, allowing us to become more fonder of the relationship between the two characters, but in this one, Pepper acts solitary towards Tony Stark after his actions in the film, so we do not see as much character growth as we do in Thor: The Dark World.
Winner: Jane Foster
Round 4: Villain
In Iron Man, Mickey Rourke pays Ivan Vanko/Whiplash, an intelligent character filled with Jealousy after Starks family success is based on a lie (according to him) and wants revenge, sounds like the right motivation, but it did not come across in the film, he fell short in so many areas, and was easily defeated at the end of the movie.
In Thor: The Dark World, Malekith the Accursed is a supervillain. He is ruler of the Dark Elves of Svartalfheim. Malekith is another weak villain, his motives were not the most convincing of sorts, but also he was out shadowed by Loki, who played an Anti-Hero and a villain.
In Captain America: The Winter Soldier, the villain is split, The Winter Soldier and Alexander Pierce, but both of these characters had a lot of layers, they were not simply villains, they were covered up by layers of political disputes and difference in perspective, which added to the movie.
Winner: Captain America: The Winter Soldier.
Round 5: Box Office Success
Speaks for itself!
Winner: Captain America: The Winter Soldier
The Overall winner is Captain America: The Winter Soldier by 3:2:0, despite Thor being the better Superhero and the better love interest, Captain America: The Winter Soldier, has the better plot, villain, and worldwide Box Office success.
But which film is best to you. Vote and comment below, let me know!