I completely agree @bluemusickid, never thought of it that way but now you’ve brought it to my attention it makes so much sense.
The only thing I disagree with you on, is the part where you say “he didn’t care”. In my opinion, I think he did care. I think he was panicking, I think his hands were shaking, I think he thinking about the gun that Rumlow had holstered, but he chose to put the lives of millions above his own in that second.
Like you said, he’s mirroring the humble beginnings that Steve stemmed from, perhaps he emphasises how everyone has a piece of hero in them only if they act upon it. I know this quote is from DC but it fits beautifully in this: “you can either do nothing, or you can do something.”
He did something, the right thing, while having full knowledge that he faced the real possibility of being killed for it. “… didn’t have superpowers but was willing to sacrifice himself” exactly. In just one scene, he’s easily become my favourite Marvel character because of it.
His name is Cameron Klein. Balls of steel indeed.
@kestrafagnor would love to hear your thoughts on this, what do you think?