X-Men’s Colossus and the Avengers' Luke Cage settled which Marvel hero is stronger, a victory cemented by the winner killing the loser. Although not the strongest ever, both heroes have showcased events of great strength either in the protection of innocent lives or against any number of superpowered threats.
In one universe though, both Luke and Piotr are members of the Avengers who cross paths with the Exiles during their interdimensional travels throughout the multiverse. Although they fight on the same side, one of the Exiles convinces Colossus to switch sides, leading to a fight to the death. The Exiles are a group of mutant heroes from parallel worlds who are tasked with traveling to other dimensions and working together to fix them, either by preventing great catastrophes or allowing specific events to occur. This has led to a wide variety of alternate universes being introduced, such as one where the Exiles met a version of the Simpsons.
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In Exiles #26 by Chuck Austen and Clayton Henry, they travel to a world where every major superpowered hero is financed by Heroes for Hire Inc, a business run by Danny Rand, Luke Cage, and Piotr Rasputin. When their refusal to intervene results in a villain causing a major disaster that kills millions in Japan, the Avengers are en route around the time the Exiles drop in. After learning the Avengers were meant to die, the Exiles are tasked with ensuring that they do die. While members of the Exiles choose to help the injured and dying victims in Japan, their leader, Illyana Rasputin, chooses to complete the mission. When the Avengers arrive in Japan, Magik gets their attention and then destroys their
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