@Tom0ve I planned on waiting til I could review the videos for a 4th time but still busy. If you're talking about "Aim Assist" and not "Aim Bot" when you reference Auto-Aim then my mistake for getting them mixed up. Adding a third term that I've never seen used confused me.
When I saw the Lifeline video I saw 0 snapping onto targets but she made very few adjustments while shooting. When I have a high damage weapon I do the same. Point the gun at a spot that my target will occupy more than any other spot so that I don't have to make many adjustments. Typically the body.
If my opponent has a similar weapon and better accuracy they'll beat me. If they're dodging shots rather than following a strafe pattern they'll beat me as I'm not predicting their movements. If they're just following a strafe pattern with so-so accuracy they'll lose.
The Lifeline won more of those fight then I felt she should have but I have no experience with PC so maybe her opponent just missed.
Two of her Kraber shots were incredibly suspicious. The first shot she took she line her gun up perfectly with a target she couldn't see. Nothing to do AA but suspicious. Next she landed a hipfire Kraber shot on a flying horizon. Luck? Skill? AA? I dont know since its not something I experience much.