I was level 9-10, using Capon's bow and better piercing arrows
Guessing you had some decent armor too. That or maybe the AI doesn't have decent arrows because you are hit several times with arrows for almost no damage.
you can do this with the first bow you get in the game and the results will be the same.
I tried something like this early on and I got raped by a horde of angry foreigners, so not sure I believe you. Especially if you don't have good armor.
In the end it's just the terrible AI that somehow resets when you run away from them and freeze in place doing fuck all.
so it's an AI exploit. Most games have them, especially large games on release. ok. hopefully it will be fixed, but we'll see.
It's not like it's a core game mechanic though, like level scaling etc.