@MoNosDirtyGamingI'm not sure how I would compare keyboard/mouse and controller in the exact same conditions. I don't believe many people are equally skilled in both, and I sure am not. After thought edit: (I'm sure there's even substantially less people that use aim assist, that would also be willing to expose it as the huge advantage it is over fear of losing it)
All I can do is provide the evidence and fact that aim assist provides a substantial advantage when used on PC.
The short testing I did made it grossly apparent how easy close range encounters were with aim assist. And a video I linked on one of these posts showed a guy explaining how he abuses aim assist on PC to get no recoil, and 'ez lazering aim'.