Lorenzo Insigne produced two goals and two assists for the victory.
Ancelotti said, “I took responsibility and said this is a squad capable of winning the Scudetto. As a team, this is a responsibility we should all take on, because it is strong, it has a lot of potential and showed tonight a lot of quality, even when not playing that well.
“The four forwards, because Fabian Ruiz was in a hybrid role, caused huge problems to Fiorentina. We've got to build on that potential.
“When there isn't the right movement or intensity in the movement, then you do risk getting caught between the lines. We have to keep doing what we're doing, as in training this team gives me the kind of satisfaction that few others ever have."