You know how in Civil War when Vision just carelessly shot his laser beam into the sky aiming for Falcon but accidentally shot down Rhodey? What if Sam never dodge his laser beam and actually got hit? Falcon doesn’t have a super suit of armor protecting him like War Machine does. What was Vision trying to do by shooting him like that? He would’ve fell and plummeted to the ground exactly like Rhodey did. Just think for a second… Rhodey barely survived that fall with his War Machine armor on, it left him paralyzed! Falcon’s suit just consists of his wings, what chance does Sam have of surviving a fall like that? He would have died! Can you just imagine if they went this route in the movie, Vision accidentally killing a former friend and ally of the Avengers team. Imagine how devistated Cap would be finding out one of his best friends died in that fight? Imagine how Wanda would feel about VIsion after that… would this have split the team apart even more? One can only imagine..