Dries Mertens hit a hat-trick on the night.
But Ancelotti rapped: “I was more angry than excited, because the result says we had a great game, but the performance in fact shows Empoli played better than we did. They had more control, more initiative and up until we went 4-1 up it was a real struggle.
“We only got a draw against Roma despite playing far better, while today we were rewarded well, well beyond our merits. I told Aurelio Andreazzoli at the final whistle that Empoli played very well and I was impressed. He might've thought I was joking, but I really wasn't. We were simply deadly in attack, but Empoli played better than we did.
“I even got angry with Mertens! He was playing as a winger and I told him that if he wanted to score goals, he had to go more central. He replied that assists were important too… Ah well, he got a hat-trick in the end and an assist too."