I think people saw the numbers and a few highlights and imagined him to be a different player than he is. He is not going to be out on the wing, beating players for fun, it is all quick dribble, pass, move into space,1-2 and picking good options. I think he can an excellent foil for the likes of Rashford and Greenwood, being a steady supply of chances for them, but he is not a wow player at first glance.
However we saw yesterday in Traore a guy who is that Wow player but actually accomplishes very little, Sancho should be grand when he settles, I think Ole is going to have to make the call to play him almost exclusively on the right, with Pogba, Ronaldo and Rashford to come that left side will get crowded.