Pep wants his wingers to take on players and create chances, he had Robben as well who was firing for him. De Bruyne also gives the ball away more than any other player after Hazard in the league. (Yes more than Sanchez), they aim to be positive and take chances but they have players that are so precise and technically talented and they are great at winning the ball back quickly.
He came to Arsenal and was given so much responsibility, he was relied upon to win them games alone and now he's in a team where he isn't the main player but one of the main.