I don't know why people are just too quick to run their mouth and judge a coach based on his first match. Ancelotti has not spent much time with the Brazilian team and he hasn't observed them play any match in order for him to see the loop holes in the team. It was in their first match that he was able to study the team and understood where the problem is which he fixed. Look at their last two matches, how they won it with ease.
One of the biggest problems fans have is finding fault with their team when they lose. Ancelotti is certainly a great coach with no bad record and he performed well with Real Madrid. Ancelotti didn't have much to do in Brazil's first match, it was basically a match for him to study the team and identify their flaws. He has shown why he is an influential coach, as you can see from his performances in the last two matches. I hope Brazil's success will resume with Ancelotti and it will be a long one.