McKennie and Matuidi are/were involved so much more than Khedira in his average Serie A match. Khedira literally had games were he on average made one touch every 5 minutes, the guy played on cruise control for two thirds of the season. And no, I don't think (or said) that's the only factor to define lazy, but Sami definitely was cruising for a lot of his Juve career, his lack of effort even made his own fans boo him at one point.