Among those, Dunn is the only one who I thought played well. She defended 1v1 well and created several opportunities on offense. She did get beat a couple of times, but was QUICK to recover.
But I agree regarding the others. To my eye, Sauerbrunn and Dalhkemper did very little. And I will add Sonnett, Rodman, and Smith to that same list.
I think the problem with Dunn is she doesn't want to be a defender. She's athletic and fierce, though, which I'm not sure I'd use as labels for the other 2, but Dunn wants to be a striker. Sauerbrunn is a player I like but everybody gets old.