Ed read the original Captain America comics when he was a kid, and he knew a Steve in Jaha. They fought the Witch Witch together there, and talked about old movies and actors. He's got a lot a lot of respect for him. In my head, he tends to compare Steve to his brother which is a compliment because Peter's definitely his hero.
Mordecai septman comes from a completely different timeline in which there were no world wars and no America as we know it, so he doesn't have a clue who Steve is. However, they'll be working together. I'm sorry, Steve.