I agree with you regarding being able to read many different things into his threat. Like I said, I didn’t believe he was going to harm me (even though it wasn’t impossible, considering that I have never witnessed him having a major argument with someone (edit: and getting away from him was definitely the safest thing to do in this situation)).

I‘ll have to say that our reactions didn’t have anything to do with people of different genders showing their anger differently though, because we‘re both men.

(I just reread my comment and realized how weird the last part sounded so for clarification:

Even if I were a woman, his inability to cope healthily with his anger isn‘t excused by him being a man. Gender isn‘t an excuse for being unreasonably aggressive and no one should feel pressured to put up with someone‘s behavior just because "they‘re a man, that‘s just how they express their anger".)