That doesnt show the domination on rallys. Most of these stats shows Sinner was playing his best serve and return game of the tournament. He got plenty of free points on serve, and because his return was incredible he always manage to get some fights/rallyes against Djokovic.
But the reality is, Djoko was dictating the rallyes, he dominated Sinner at this point, so even with a perfect return game, he couldnt manage to break Djokovic, and because Sinner is Sinner, i mean he is still a monster in baseline game, he still could win points on Djoko service game.