Notes for a fuller piece:
- Tony Stark vs. Bucky Barnes; weapons manufacture vs. "I remember every single one."; passing off responsibility to external agency vs. "I still did it"
- Steve doesn't break Tony's heart: Tony's heart is already broken, has always been broken. Steve just makes him feel it, rather than swallowing it in drink and drugs and sex, or passing off his heart to Pepper, or lashing out.
- Steve and Bucky may not express their emotions, but they take responsibility for them; Tony, with all of his privilege and access to resources for therapists, etc., does not. He is like an addict who has yet to hit rock bottom.
- Tony Stark vs. T'Challa; child vs. king.