The deadlock was only broken by a Ronaldinho penalty after Stefano Lucchini was harshly sent off for a handling offence inside the box.
"Admittedly, the result was affected by having an extra man," said the Milan Coach after a 3-0 victory over Sampdoria.
"We took advantage of the space that opened up. It was a difficult first half because Sampdoria defended well and focused only on the counter-attack. We know we have the quality and can maintain our balance now, allowing us to score a goal at any moment."
The other deciding factor was the introduction of Kaka after the break and he combined brilliantly with Ronaldinho.
"Ronaldinho has improved and is settling in," continued Ancelotti. "Kaka isn't very sharp after a long journey from Brazil. I would have preferred to play him from the start, but he didn't feel ready."
The Rossoneri are now a point off the leaders, awaiting Inter's trip to Roma this evening, and right back in the title race.
"After the two initial defeats we have done very well. This is an unusual season where every team, even the less respected ones, can really trouble any opponent."