First off, he has great crosshair placement. Second, hes always moving, and stops by holding both buttons and cancelling the movement, making the timing and first bullet accuracy of his shots always high. And when he does miss, he has the patience to move and microadjust without overheating on duels. And usually he also uses his movement as a way to microadjust, timing his movement with the enemy movement to stop at the right time without even moving his mouse. That's why he almost never spray or crouch (unless when taking off angles), why he's always so confident on taking duels and why his sens seem so low sometimes when he just isnt moving at all
He understands the game mechanics very well and abuses a lot, while also being very good with angles and mentally aware of every movement hes doing