but it does matter if, for example, Harry shoved first, or got aggressive or was physical at all.
Lets pretend that H and W had an argument, there were raised voices from one or both parties, one or both parties got pushed/shoved. At some point one or both parties tried to diffuse the situation. We don't know the exact details, because we weren't there.
And both parties are in "defense/accuse" mode
H may report it as: "I stayed calm, whilst he was a raging bull. I walked away but he followed me through to the kitchen where I tried again to de-escalate the situation, but he kept on going on. He shoved me in anger trying to get his point across, I fell and hurt myself"
W may report it as: "Harry was angry, angrier than I've ever seen him, he got in my face and shouted at me and I pushed him away to get out of that tense situation as he was blocking my way out of the kitchen. he then followed me to carry on the argument, and I tried to get some space between us to calm everything down"