Huh? I'm a Sterling fan but I think his pace is a myth, or at least he never seems to use it... Foden's pace and especially his acceleration is absolutely incredible now and he knows exactly how to use it
Sterling is very fast but he beats people without the ball more often than with it and that makes people not really notice it as much.
When Foden or Sané pick up the ball and run with it at pace everyone gets excited, when Sterling drops the ball off and gasses a couple of defenders to be free for a return pass or be wide open in the box it's often off camera, and people tend to focus on the ball.
His pace helps him to drop defenders and get into the free spaces he picks up in the box to get all his chances.