no,it is the formation.
Dortmund tried to force their play in the middle of the pitch, which is suicidal when that pitch has vidal amd marchisio in the center.
I guarantee that if they had fit players to play out wide then the game would have been harder. it's not a secret that juve's 3-5-2 struggles against wingers and it's the reason we are better off avoiding bayern and real madrid