The wording doesn't ring true for me at all.
Look we've all got sons, brothers, partners, husbands, fathers, male friends. Most of us have seen how a minor fight between two relatively well brought up men goes.
It's a tussle. It's more like westling. It's slow, awkward and chaotic. Someone pulls someone, someone pushes someone. A punch gets thrown and misses or doesn't quite land. Especially when the two fellows are middle aged and middle class or above. It's not like a fight between two tooled up, boozed up young nutters outside a B League football ground. It's awkward, slow and a bit of a letdown. (Unless one of the combatants has frontline close combat training and would instinctively defend themselves of course, but that doesn't seem to have happened here.)
So that's what a real middle aged middle class 'fight' is like. A slow, awkward, embarrassing tussle. Whereas what's being described in this extract is a scene from a Marvel movie. One assailant, moving 'so, so fast'. The other person doing nothing to defend themselves. The assailant possessed of such superhuman strength that he's able to THROW the other person to the floor in ONE GO (ever tried that? It's surprisingly difficult. Human beings are quite good at staying on their feet when they have to. Especially when they're younger, heavier and fitter than the assailant). Younger person falls with such force that he breaks a dog bowl which tend to be ceramic, shallow, thick sides. He broke it??? Did he fall from 40 feet, is William really that strong? Or was Harry wearing chainmail? Press X to doubt this detail.
The assailant them STORMS out, pausing only, Arnie-like, to deliver the final, chilling last word - although he forgets himself and uses his victim's pet name, weird thing to do after a terrifying smackdown,
Nah, it didn't happen like this.