ActualCornHusker
Starter
In my uninformed opinion it would be because the are coached differently. They're probably coached to stay in their lanes and play within the system. Coach chin always talks about playing aggressive, see ball get ball. Maybe that's why all three middle backers play the same way when it comes to over pursuing. Just a guess.
I'll add this: as someone who has played a lot of sports and done some coaching as well, I'll tell you that it's a hell of a lot easier to start with a blank slate and coach them to do it your way than it is to coach players who have been coached a certain way, or developed poor habits. A lot of times, they'll do it the right way in practice, but then they'll revert back to their old habits during games.