There’s that one dude who’s a former CSGO player who picked up Overwatch after a very long time and he had zero gamesense, not even knowing abilities of the character. He got to diamond with his insane aim as far I know, but that’s the point where a person has to really start to hone their game sense to climb higher to masters and gm.
Then there’s streamer named Violet who got to support rank 1-3 with brigitte accounts and brigitte is certainly not a character who beats the rest in aim ability, nor is she strong enough any longer to cheese into higher ranks. And yet the streamer has also great brigitte mechanics and very good game sense that got them so high.
There is mechanical skill without aim requirement too, even if aiming is part of one’s mechanical skill. I would argue that overall mechanical skill is vastly more important than pure aim point and click skills. Even great aim widow is not going to beat other widows in 1vs1 if they don’t master their footwork. Great aim widow will beat other widows even less if they don’t have game sense. Far too frequently I see widows who get beat upon when they get dived and they don’t even bother to come to me for heals and just die on their lonesome. Even myself with my garbage aim can beat proficient, practiced widowmakers if I get better positioning. And all I need is to get lucky with aim, it happens more than you think and it’s not exceedingly difficult to kill someone if you got oneshots.
Sustained damage is far, far more difficult to score kills with than burst.