...t's poorly-stated and the examples are terrible - "Spider Man 3" isn't part of the Marvel cinematic universe, and "Iron Man" and "The Incredible Hulk" are far in the background. That doesn't mean he's incorrect - Yellowjacket in "Ant-Man" largely uses similar powers to Ant-Man and that's his main piece. But here's a note - these are mostly in origin stories. "Iron Man 2" uses the similar but different Whiplash and Justin Hammer villains who show other elements of Tony with different personalities and weapons, and "Iron Man 3" uses the very different Extremis-related characters. Had a proper Mandarin been used, he too, could've been an effectively different villain. The Winter Soldier and Alexander Pierce in "Captain America: The Winter Soldier" differed a lot from the original. Malekith in "Thor: The Dark World" had different powers... but suffered more from being overshadowed by Loki. Ultron was a lackluster villain to me for reasons that would make this post two or three times as long. The Green Goblin, Electro and Dr. Octopus had different powers from Spidey and Magneto from everyone else, if we must bring in the other Marvel franchises, which I feel is a moot point. I think writers tend to favor similar villains in origin stories - across the board, including at DC and Fox - because the first movie involves the most character development for the hero and not only does a similar villain enable less focus on independent character development but creates a better contrast - seeing Superman and General Zod have the same powers, but Superman choosing the side of good, is a great contrast. Note that the Joker didn't appear until "The Dark Knight" and Lex Luthor was saved for the "Man of Steel"'s sequel. The OP brought in Loki as well, but Loki has no on-screen power differences from Thor outside "The Avengers" -- the only reason Loki excels as a character is because of his development, not because of his powerset. While we don't necessarily condone Loki's actions, we largely understand his motivations for them, which makes him a more interesting character to audiences. This is coming from someone who finds Loki a severely overrated character -- but I get where the hype comes from. This is not to suggest Marvel does not have issues with good villains - they do - but that the issue lies not with the matter of their powers or strength but their character development.