AVB was facing the Blues for the first time since he was sacked in March.
"I think the game was won by individual brilliance from Oscar, Mata and Hazard who were tremendous," said the Portuguese.
"These are people who can unlock doors and create problems, and they certainly manage to find gaps and beat people because they are extremely creative and extremely good.
"A player is always a good player. We signed Mata for his talent and he is certainly not going to stop producing these moments of brilliance like he had today."