It's not about the way he runs, it's about his attitude and performance when he wears a Juventus shirt, we all have seen him give a half-assed performances time and time again and again and again.
I can only bow down to model professionals like Del Piero or Buffon, who have serviced this club admirably and can with a clear heart say that they gave their all (as much as it's humanly possible) for the black and white shirt. I have no problem if anyone calls them pure class, but Khedira is nowhere near in the same category.