That's how good a bowler he is Sman, and indeed how good international batsman are in comparison to us mere mortals. Even they can't just go out and smash someone about who is bowling at 80mph in the right areas. It's not just that he puts it in the same place, he also has the ability to put it pretty much anywhere on a whim, so if the batsman tries to take him on he more often than not will alter his line or length to counter it. On top of that he gets just enough seam movement to mean that the ball isn't quite where your brain would calculate it being and as such finds an edge.