Still, what happened happened, and it set a course of events that you have to wonder what would’ve happened had everyone been on speaking terms when Thanos first attacked.
It’s a fight that had been building between the two since Phase 1, and it all came to a head as Cap went to bat for Bucky.
The epic-ness of this fight cannot be understated, though I would argue that on paper, Cap and Bucky shouldn’t have struggled to take down Tony as much as they did.
As if there were any doubt this would be on the list, Tony and Captain America’s final showdown in Captain America: Civil War was a major turning point in the MCU that set the stage for the thrilling final acts of The Infinity Saga.