Not sure tbh. Still zonal I think. But the difference was Jagielka actually went and won some headers.
He was organising more than anything else, and then yes like you say being aggressive and moving towards the ball.
It's one game, evidently, against crap opposition. But, it shows that when the players do their jobs it can work to nullify what was Cardiff's only threat.
Jagielka can't play every game and should be our last-choice CB. The issue is, none of the other three could organise a P up in a brewery.