"The scene with Black Widow yelling to people to get out of the way as Winter Soldier follows her through the streets really made me think that. I know everyone complained about the loss of life in Man of Steel and here was the non-superpowered Natasha actively trying to get people out of the way of the big bad. The audience expects that of Captain America but even the most morally dubious good guy is more thoughtful than Superman was in MOS"
This this and this, but it also made me REALLY happy because Natasha in the comics is very much like this as well. She may be morally ambiguous but the only people she hurts are people who (in her eyes) deserve it. She has always been about avoiding collateral damage and it’s one of the reasons I love her. When some superheroes will compromise for the greater good (even Cap!) she always thinks about the people who are going to get hurt.