Was he a jerk/asshole? Sounds like it. Did she overact? Maybe. Truth is we will never really know.
I've been involved in "miscommunications" at work and while my personal examples never approached the level of this case it sheds light on this for me.
I wouldn't be surprised in the least if Brad Wardell thought what he said and did could be considered slightly lacking in class, however it was no where close to sexual harassment. And simultaneously I can believe Alexandra Miseta thought it was blatant harassment.
Which is true? We'll never know. It's possible both are true, depending on your point of view. It's possible neither are true. Human communication is complicated in general, in this area it's nearly undecipherable.
Edit: For the record, my personal examples involve being "overly blunt" and using expletives to describe customers to co-workers who "didn't appreciate my language". It's slightly more complicated than that, but that's the gist of it.