Porque Coulson é o gato de Schrodinger, ele está vivo e morto.
Em Agente de S.H.I.E.L.D. ele está vivo (mesmo que Tony Stark venha visitar).
No universo do filme MCU, ele está morto.
Por quê? Josh Whedon diz isso.
“It’s a weird little yes and no. As far as I’m concerned in the films, yes he’s dead. In terms of the narrative of these guys [The Avengers] his loss was very important. When I created the television show, it was sort of on the understanding that this can work and we can do it with integrity, but these Avengers movies are for people to see the Avengers movies and nothing else. And it would neither make sense nor be useful to say ‘Oh and by the way remember me? I died!’”