While the charm of Captain America is that he pushes the boundaries of human potential without being truly 'superhuman,' Marvel's decision to give Sam Wilson a very specific version of Wolverine's healing factor was definitely the right call.
In 2012's Captain America #25, Sam Wilson became Captain America, taking over the role after Steve Rogers was depowered. Along with his falcon Redwing, Sam fought villains including Scarecrow and Baron Zemo, briefly leaving the Captain America title behind before returning to it recently (coinciding with his adoption of the role over in the MCU.) One big difference between Steve Rogers' Cap and Sam Wilson's is that Sam boasts a huge pair of mechanical wings. Unfortunately, unlike Captain America's fabled shield, these wings can be broken.
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That happens in Avengers: Rage of Ultron by Rick Remender, Jerome Opena, Pepe Larraz, and Mark Morales. When Ultron returns to Earth with a vengeance, the Avengers stand against him, only to be faced with robotic duplicates of their classic roster. When Sam takes on an Ultron-ified Scarlet Witch, her powers shatter his wing, leaving him dependent on Spider-Man to escape. Sam manages to take possession of a weapon that can kill Ultron and is picked up by the Avengers Quinjet, only to then fly to safety with his own wings when the vehicle explodes. When Spider-Man questions how Captain America's wings are once again functioning, Sam confirms that they're made of self-repairing vibranium and have already healed from the damage caused by Ultron.
While giving Sam Wilson's wings a Wolverine-like healing factor is a drastic move for Captain America — who is often depicted
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