The amount of distance covered is generally a very crude indicator. Context is important, yes. For example, Vinni has a higher mileage in the Champions League than Raphinha, but no one in their right mind would say that he defends better than Raphinha. But 7 km is a very low indicator.Can't take out of that the context that both Diaz and Raph play for new age managers who live and die by pressing, hence there wingers will run more.
Mister isn't that type of coach, he sits in a mid block when defending.